Rates & Ratios

Front

What is a ratio?

Back

A comparison of two quantities using division.

Front

How do you simplify a ratio?

Back

Divide both quantities by their greatest common divisor.

Front

What is the boy:girl ratio in a class with 15 boys and 20 girls?

Back

3:4

Front

If Hilbert burns 120 calories in 30 minutes, how many calories does he burn in 1 hour?

Back

240 calories.

Front

What is the value of 'a' if Hilbert burns 120 calories in 30 minutes and 60 calories in 15 minutes?

Back

a = 60.

Front

How many people are in 1 row if there are 42 people walking in 2 rows?

Back

21 people in 1 row.

Front

If a bakery makes 100 batches of cookies in 8 hours, how many batches can they make in 12 hours?

Back

150 batches of cookies.

Front

What is the formula to find a unit rate?

Back

Divide the quantity by the number of units.

Front

What is a rate?

Back

A ratio that compares two different kinds of quantities.

Front

If a car travels 300 miles in 5 hours, what is the rate of travel?

Back

60 miles per hour.