Rate and Ratio Problems

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you solve a rate problem?

Back

To solve a rate problem, identify the quantities involved, set up a proportion if necessary, and use multiplication or division to find the unknown quantity.

Front

If 6 tablespoons of plant food are needed for 2 gallons of water, how much is needed for 6 gallons?

Back

18 tablespoons of plant food.

Front

What is the unit rate?

Back

The unit rate is a rate in which the second quantity is 1. It shows how much of one quantity corresponds to one unit of another quantity.

Front

How do you find the total cost when given a price per pound?

Back

Multiply the price per pound by the total number of pounds.

Front

If Luisa pays $3.96 for 2 pounds of strawberries, what is the price per pound?

Back

$1.98 per pound.

Front

What is a proportion?

Back

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

Front

If Tyler scores 22 home runs in 7 games, how do you find his expected score in 21 games?

Back

Set up a proportion: 22/7 = x/21, then solve for x to find 66 home runs.

Front

How do you calculate the number of hops made in a different time frame?

Back

Use the rate of hops per second to find the total hops in the new time frame by multiplying the rate by the new time.

Front

If Lula makes 24 hops in 30 seconds, how many hops does she make in 50 seconds?

Back

40 hops.