Quantity, percentage, percentage value: Applying the formula

The Whole number is Greater than 100Change in two elementsFinding the whole using a partPricing strategies including discounts and markupsCalculation using percentagesConvert fractions to percentagesThe Whole number is a Multiple of 100The Whole number is 100Calculate the percentage of the whole numberExpress one number as a percentage of another
Question 1

A 20% discount is applied to a toy ordinarily priced at $40.

What is the new price after the discount?

Question 2

How much is 7% of 40?

Question 3

How much is 25% of 86

Question 4

What is the percentage of 14 over 90?

Examples with solutions for Quantity, percentage, percentage value: Applying the formula

Exercise #1

A 20% discount is applied to a toy ordinarily priced at $40.

What is the new price after the discount?

Video Solution

Step-by-Step Solution

40−8=32 40-8=32 To find percentages, we must use two pieces of information we have: the total amount (40)andthediscount(2040) and the discount (20%).</p><p>This information can be placed in the following formula:</p><p><span class="katex">\( \frac{Price\times\text{Percentage}}{100} Which allows us to find the percentage of something.

We replace:

40×20100= 40\times\frac{20}{100}=
800100= \frac{800}{100}=

8 8

We discover that the value of the discount is 8.

But we are not finished yet!

We need to subtract the discount from the original amount to find the sale price:
\( 40-8=32

Answer

32

Exercise #2

How much is 7% of 40?

Video Solution

Answer

2.8

Exercise #3

How much is 25% of 86

Video Solution

Answer

21.5

Exercise #4

What is the percentage of 14 over 90?

Video Solution

Answer

15.555...%