Practice Ratios in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A comparison of two quantities that shows their relative sizes, written as a:b or \frac{a}{b}.
A recipe that uses 2 cups flour for every 1 cup sugar has a 2:1 ratio.
Example 1
easyA recipe calls for 3 cups of flour and 2 cups of sugar. What is the ratio of flour to sugar, and how much sugar is needed for 12 cups of flour?
Example 2
mediumThe ratio of boys to girls in a class is 5 : 3. If there are 40 students total, how many boys and how many girls are there?
Example 3
easySimplify the ratio 18 : 24.
Example 4
hardA map uses the scale 1 : 50{,}000. Two towns are 3.5 cm apart on the map. What is the actual distance in kilometres?
Example 5
mediumA recipe uses flour and sugar in a 5:2 ratio. If you use 15 cups of flour, how much sugar do you need?