Percent Proportions

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you convert a percent to a fraction?

Back

To convert a percent to a fraction, divide the percent by 100 and simplify if possible. For example, 25% = 25/100 = 1/4.

Front

What is the formula to find the percent of a number?

Back

The formula to find the percent of a number is: (Part/Whole) x 100 = Percent.

Front

If 20% of a number is 30, what is the number?

Back

To find the number, use the formula: Whole = Part / (Percent/100). Here, Whole = 30 / (20/100) = 150.

Front

How do you find what percent one number is of another?

Back

To find what percent one number (Part) is of another number (Whole), use the formula: (Part/Whole) x 100.

Front

What is the percent equivalent of the fraction 1/4?

Back

The percent equivalent of 1/4 is 25%. (1/4 = 0.25 = 25/100 = 25%)

Front

How do you calculate the total when given a percent and a part?

Back

To calculate the total, use the formula: Total = Part / (Percent/100).

Front

If a class has 30 students and 10% are absent, how many students are absent?

Back

10% of 30 = (10/100) x 30 = 3 students are absent.

Front

What is the percent increase if a price goes from $50 to $60?

Back

Percent Increase = ((New Price - Old Price) / Old Price) x 100. Here, ((60 - 50) / 50) x 100 = 20% increase.

Front

If 15 out of 60 students passed a test, what percent passed?

Back

Percent Passed = (15/60) x 100 = 25%.