Proportions word Problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

Front

What is the scale in a map?

Back

The scale in a map is the ratio of a distance on the map to the actual distance it represents.

Front

If a map has a scale of 1 cm : 13 km, how do you find the distance on the map for 104 km?

Back

Divide 104 km by 13 km/cm to get 8 cm.

Front

What is an exchange rate?

Back

An exchange rate is the value of one currency for the purpose of conversion to another.

Front

If 1 US dollar equals 138 JMD, how much is 35 US dollars in JMD?

Back

35 US dollars equals 35 x 138 = 4830 JMD.

Front

What does a ratio represent?

Back

A ratio represents a relationship between two quantities, showing how many times one value contains or is contained within the other.

Front

In the ratio 1:5 for sugar to flour, if you have 25 cups of flour, how much sugar do you need?

Back

You need 5 cups of sugar.

Front

How do you find the cost per item?

Back

To find the cost per item, divide the total cost by the number of items.

Front

If 20 Fuji apples cost $12, how much do 5 apples cost?

Back

5 apples cost $3.