Percents

Question 0

How do you find the percent of a number?

Answer 0

Multiply the number by the percent expressed as a decimal or fraction. For example:

20% of 90=0.20 x 90=18

Or

20% of 90= 20/100 x 90= 1/5 x90= 18

Question 1

What is the meaning of percent? How can it be represented?

Answer 1

Percent means per hundred or number out of 100. It can be represented as a fraction with a denominator of 100, or as a decimal.

Question 2

How do you find percent increase?

Answer 2

1. Find the amount of the increase.
2. Divide the increase by the original amount and express this quotient as a percent.

Example:
An increase from $24 to $30

1. (30-24)=6
2. Therefore, 6/24=0.25=25%

Question 3

How do you find percent decrease?

Answer 3

1. First find the amount of the decrease.
2. Divide the decrease by the original amount.
3. Express this quotient as a percent.

Example:

An item with a value of $30 is decreased to $24.

(30-24)=6
6/30=0.20=20%

Question 4

What is the formula used to find percent increases greater than 100%?

Answer 4

3n-n/n, where n is 300% of its original cost.