Examples with solutions for Converting Fractions to Percentages and Vice Versa: Converting from a fraction to a percentage by multiplying the fraction by 100

Exercise #1

Write the fraction 28 \frac{2}{8} as a percentage

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Simplify the fraction 28\frac{2}{8} if necessary.

  • Step 2: Convert the simplified fraction to a percentage by multiplying by 100.

Now, let's work through each step:
Step 1: Simplify the fraction 28\frac{2}{8}. The greatest common divisor of 2 and 8 is 2. So, we divide the numerator and the denominator by 2:
28=2÷28÷2=14 \frac{2}{8} = \frac{2 \div 2}{8 \div 2} = \frac{1}{4}
Step 2: To convert the fraction 14\frac{1}{4} to a percentage, multiply it by 100:
14×100=25 \frac{1}{4} \times 100 = 25
Therefore, the fraction 28\frac{2}{8} is equivalent to 25% 25\% .

The correct answer is 25%\boxed{25\%}.

Answer

25%

Exercise #2

Write the fraction 1310000 \frac{13}{10000} as a percentage

Video Solution

Step-by-Step Solution

To convert the fraction 1310000 \frac{13}{10000} into a percentage, we follow these steps:

  • Step 1: Identify the given fraction, which is 1310000 \frac{13}{10000} .

  • Step 2: The goal is to express this fraction as a percentage. According to the formula, we multiply the fraction by 100 to find its percentage equivalent.

  • Step 3: Perform the multiplication: 1310000×100=13×10010000=130010000 \frac{13}{10000} \times 100 = \frac{13 \times 100}{10000} = \frac{1300}{10000}

  • Step 4: Simplify the result: 130010000=0.13 \frac{1300}{10000} = 0.13 This gives us the percentage value.

Therefore, the fraction 1310000 \frac{13}{10000} is equivalent to 0.13% 0.13\% in percentage form.

The correct choice from the given options is 0.13% 0.13\% .

Answer

0.13%

Exercise #3

Write the fraction 1671000 \frac{167}{1000} as a percentage

Video Solution

Step-by-Step Solution

To convert the fraction 1671000\frac{167}{1000} to a percentage, we follow these steps:

  • Step 1: Recall the conversion method from fraction to percentage.

  • Step 2: Multiply 1671000\frac{167}{1000} by 100 to perform the conversion.

Now let's perform the calculations:

First, we multiply the fraction by 100:
1671000×100=167×1001000\frac{167}{1000} \times 100 = \frac{167 \times 100}{1000}

Simplify the expression by multiplying and then dividing:
167×1001000=167001000\frac{167 \times 100}{1000} = \frac{16700}{1000}

Divide 16700 by 1000 to simplify:
16700÷1000=16.716700 \div 1000 = 16.7

Thus, the percentage equivalent of 1671000\frac{167}{1000} is 16.7% 16.7\% .

Therefore, the solution to the problem is 16.7% 16.7\% .

Answer

16.7%

Exercise #4

Write the fraction 1251000 \frac{125}{1000} as a percentage

Video Solution

Step-by-Step Solution

To convert the fraction 1251000\frac{125}{1000} into a percentage, we'll follow these steps:

  • Step 1: Identify the given fraction, which is 1251000\frac{125}{1000}.
  • Step 2: Use the conversion formula to convert the fraction to a percentage by multiplying by 100.
  • Step 3: Perform the calculation.

Let's go through the calculation:
Step 1: We have the fraction 1251000\frac{125}{1000}.
Step 2: To convert this to a percentage, we multiply by 100:
(1251000)×100=125×1001000 \left(\frac{125}{1000}\right) \times 100 = \frac{125 \times 100}{1000}
Step 3: Simplify the expression:
First, calculate 125×100=12500125 \times 100 = 12500.
Then divide by 1000: 125001000=12.5\frac{12500}{1000} = 12.5.
Thus, 1251000\frac{125}{1000} as a percentage is 12.5%12.5\%.

Therefore, the fraction 1251000\frac{125}{1000} is equivalent to 12.5%.

Answer

12.5%

Exercise #5

Write the fraction 725 \frac{7}{25} as a percentage

Video Solution

Step-by-Step Solution

To convert the fraction 725\frac{7}{25} into a percentage, follow these steps:

  • Step 1: Multiply the numerator by 100 to convert from fraction to percentage terms. Therefore, calculate 7×100=7007 \times 100 = 700.
  • Step 2: Divide the result by the denominator of the fraction. Thus, divide 700700 by 2525: 70025\frac{700}{25}.
  • Step 3: Perform the division to find the percentage: 70025=28\frac{700}{25} = 28.

Thus, 725 \frac{7}{25} as a percentage is 28%.

Therefore, the correct answer is 28% 28\% .

Answer

28%

Exercise #6

Write the fraction 850 \frac{8}{50} as a percentage

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the given fraction 850\frac{8}{50}.
  • Step 2: Convert this fraction into a percentage using the formula.
  • Step 3: Calculate the percentage.

Now, let's work through each step:

Step 1: We have the fraction 850\frac{8}{50}.

Step 2: To convert it to a percentage, use the formula:

Percentage=(850)×100 \text{Percentage} = \left( \frac{8}{50} \right) \times 100

Step 3: Calculate the percentage:
First, simplify the fraction: 850=0.16\frac{8}{50} = 0.16.
Multiply by 100 to get the percentage: 0.16×100=160.16 \times 100 = 16.

Therefore, the fraction 850\frac{8}{50} is equivalent to 16% when converted to a percentage.

Answer

16%

Exercise #7

Write the fraction 6810000 \frac{68}{10000} as a percentage

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Divide the numerator by the denominator to convert the fraction to a decimal.

  • Step 2: Multiply the resulting decimal by 100 to convert it to a percentage.

Now, let's work through each step:
Step 1: Convert the fraction to a decimal by dividing:
6810000=0.0068 \frac{68}{10000} = 0.0068

Step 2: Convert the decimal to a percentage by multiplying by 100:
0.0068×100=0.68% 0.0068 \times 100 = 0.68 \%

Therefore, the solution to the problem is 0.68% 0.68\% .

Answer

0.68%

Exercise #8

Write the fraction 34 \frac{3}{4} as a percentage

Video Solution

Step-by-Step Solution

To convert the fraction 34\frac{3}{4} into a percentage, we follow these steps:

  • Step 1: Identify the fraction given, which is 34\frac{3}{4}.

  • Step 2: Use the conversion formula for fractions to percentages: ab×100%\frac{a}{b} \times 100\%.

  • Step 3: Multiply the fraction by 100: 34×100%=3004%\frac{3}{4} \times 100\% = \frac{300}{4}\%.

  • Step 4: Simplify the result: 3004=75%\frac{300}{4} = 75\%.

Therefore, after multiplying and simplifying, we find that the fraction 34\frac{3}{4} is equivalent to 75% 75\% .

Reviewing the answer choices provided, the correct answer is:

  • Choice 4: 75%

Consequently, the fraction 34\frac{3}{4} expressed as a percentage is75% 75\% .

Answer

75%

Exercise #9

Write the fraction 919 \frac{9}{19} as a percentage

Video Solution

Step-by-Step Solution

To solve the problem of converting the fraction 919 \frac{9}{19} to a percentage, follow these steps:

  • Step 1: Identify the fraction given, which is 919 \frac{9}{19} .
  • Step 2: Use the conversion formula Percentage=(919)×100 \text{Percentage} = \left(\frac{9}{19}\right) \times 100 .
  • Step 3: Perform the calculation:

9190.4737 \frac{9}{19} \approx 0.4737 (rounded to four decimal places).

Step 4: Multiply by 100 to get the percentage:

0.4737×100=47.37% 0.4737 \times 100 = 47.37 \%

Therefore, the fraction 919 \frac{9}{19} as a percentage is approximately 47.37%.

Among the given choices, the closest correct answer is choice 2: 47.36% (rounded appropriately to two decimal places).

Answer

47.36%

Exercise #10

Write the fraction 827 \frac{8}{27} as a percentage

Video Solution

Step-by-Step Solution

To solve this problem, we'll convert the fraction 827\frac{8}{27} to a percentage using the following approach:

  • Step 1: Recall that to convert a fraction to a percentage, we multiply it by 100.
  • Step 2: Calculate the value of 827×100\frac{8}{27} \times 100.
  • Step 3: Simplify the result to obtain the equivalent percentage.

Let's execute these steps:

Step 1: The given fraction is 827\frac{8}{27}.

Step 2: We multiply this fraction by 100 to convert it to a percentage:
827×100=8×10027=80027\frac{8}{27} \times 100 = \frac{8 \times 100}{27} = \frac{800}{27}

Step 3: Divide 800 by 27 to get the decimal:
8002729.62962963\frac{800}{27} \approx 29.62962963

Rounding the decimal to two decimal places, the percentage is approximately 29.63%.

However, looking at the given choices, 29.62% is the closest option and the most accurate considering typical rounding conventions.

Therefore, the fraction 827\frac{8}{27} is approximately 29.62%.

Answer

29.62%

Exercise #11

Write the fraction 835 \frac{8}{35} as a percentage

Video Solution

Step-by-Step Solution

To solve this problem, we'll convert the fraction 835 \frac{8}{35} into a percentage by multiplying it by 100.

  • Step 1: Multiply the fraction by 100 to convert it to a percentage.
    This gives us:

835×100% \frac{8}{35} \times 100\%

We now perform the actual multiplication:

  • Calculate 8×10035\frac{8 \times 100}{35}.
  • This equals 80035\frac{800}{35}.
  • Divide 800 by 35 to simplify the result:

800÷3522.8571 800 \div 35 \approx 22.8571

We round this to two decimal places to get an approximate percentage:

  • The result is approximately 22.85%22.85\%.

Thus, the fraction 835 \frac{8}{35} as a percentage is 22.85%.

Answer

22.85%

Exercise #12

Write the fraction 715 \frac{7}{15} as a percentage

Video Solution

Step-by-Step Solution

To solve this problem, we need to convert the fraction 715\frac{7}{15} into a percentage. We will do this by multiplying the fraction by 100. The process is as follows:

  • Step 1: Start with the fraction 715\frac{7}{15}.
  • Step 2: Convert the fraction to a percentage by using the formula: (715)×100(\frac{7}{15}) \times 100.

Now, let's perform the calculation:

715×100=70015\frac{7}{15} \times 100 = \frac{700}{15}

Next, divide 700 by 15 to get the percentage:

700÷15=46.6667 700 \div 15 = 46.6667\ldots

For a percentage, we typically round to two decimal places, so we round 46.6667 to 46.67%. Thus, the fraction 715\frac{7}{15} expressed as a percentage is approximately 46.67%.

Therefore, the solution to the problem is 46.67%.

Answer

46.66%