Ratio and Proportion

Front

What is a ratio?

Back

A comparison of two quantities using division.

Front

Solve the proportion: 3/4 = x/12

Back

x = 9

Front

If a car travels 280 miles in 7 hours, how far will it travel in 12 hours?

Back

480 miles

Front

Solve for x: 5/x = 2/8

Back

x = 20

Front

What is a proportion?

Back

An equation that states that two ratios are equal.

Front

If 2 apples cost $1, how much do 10 apples cost?

Back

$5

Front

Solve for x: 4/x = 1/2

Back

x = 8

Front

What is the cross-multiplication method?

Back

A method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If 3/5 of a class are girls, what fraction are boys?

Back

2/5

Front

Solve for x: 7/x = 14/28

Back

x = 4