Ratio and Rate 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.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

Front

What is a proportion?

Back

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

Front

If Jose swims 3 laps in 2 minutes, how long will it take him to swim 27 laps?

Back

18 minutes

Front

Eli uses 2 tablespoons of cilantro for every 3 avocados. How many tablespoons for 9 avocados?

Back

6 tablespoons

Front

The ratio of blue marbles to white marbles is 4 to 5. How many blue marbles if there are 15 white marbles?

Back

12 blue marbles

Front

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

Back

40 hops

Front

How do you find a missing value in a proportion?

Back

Cross-multiply the known values and set them equal to each other to solve for the missing value.

Front

What is the formula for calculating a unit rate?

Back

To find a unit rate, divide the first quantity by the second quantity to find the amount per one unit.

Front

What does it mean to simplify a ratio?

Back

To simplify a ratio means to reduce it to its smallest form by dividing both terms by their greatest common factor.