Topic 5 Rates and Ratio

The ratio of boys to girls is 3:4. Which of the following is true?

• There are more boys than girls.

• If there is 20 girls there is15 boys.

• If there is 6 boys there is 9 girls.

• If there is 8 girls there is 5 boys.

Which pay is equivalent to $9 an hour?

• $80 for 8 hours

• $54 for 6 hours

• $144 for 10 hours

• $36 for 3 hours

Which of the following is the best value?

• 3 water bottles for $13.50

• 9 water bottles for $38.25

• 6 water bottles for $23.40

• 8 water bottles for $32.80

Which is the better value?

• 50 envelopes for $2.49

• 90 envelopes for $5.50

A train travels at a constant speed of 60 miles per hour. How many miles will the train travel in 4 hours?

• 15 miles

• 240 miles

• 280 miles

• 20 miles

A price of a single item is called

• ratio

• constant speed

• unit price

• rate

A unit rate has a denominator of

• 0

• 1

• 2

• .5

Which of the following is equivalent to 14:32?

• 7:16

• 7:8

• 4:8

• 16:7

Complete the definition: A relationship in which there are y units of a quantity for every x units of a quantity is a __________.

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar