Calculate 30% of 90: A Hands-On Math Problem

Question

Calculate 30 % of 90:

Video Solution

Solution Steps

00:00 Calculate 30% of 90
00:04 Apply the formula to convert percentages to fractions
00:14 This fraction is equal to 30%
00:20 Multiply this fraction by the desired number and proceed solve
00:36 Factor and reduce wherever possible
00:49 This is the solution

Step-by-Step Solution

To solve this problem, we will determine 30% of 90 using the percentage formula. Here's how we'll do it:

  • Step 1: Identify the necessary formula for the calculation.
  • Step 2: Substitute the values into the formula and compute.
  • Step 3: Verify the result and match it with the answer choices.

Now, let's proceed through these steps:

Step 1: The formula for calculating a percentage of a number is given as:
Percentage Value=(x100)×Total \text{Percentage Value} = \left( \frac{x}{100} \right) \times \text{Total}

Step 2: Substitute the given values into the formula.
Here, x=30 x = 30 and Total=90\text{Total} = 90. Thus, the formula becomes:
Percentage Value=(30100)×90 \text{Percentage Value} = \left( \frac{30}{100} \right) \times 90 .

Step 3: Compute the expression.
First, calculate 30100=0.3\frac{30}{100} = 0.3 .
Then multiply by 90:
0.3×90=27 0.3 \times 90 = 27 .

Therefore, 30% of 90 is 27 27 .

Answer

27