Ratios and Rates Word Problems

You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What was your unit cost per pizza?

• $4.95 per pizza

• $5.75 per pizza

• $7.25 per pizza

• $6.50 per pizza

unit rate is a rate in which the unit in the denominator is:

• 0

• 3

• 1

• 2

You go to the grocery store to buy dog food. The store has three sizes available:
A 20-lb bag for $23.44
An 8-lb bag for $9.88
A 40-lb bag for $49.00
Which size bag has the lowest cost per pound rounded to the nearest cent?

• The 8-lb bag

• The 20-lb bag

• The 40-lb bag

• I have a cat

Harry mowed eight lawns and earned $96. How much did he earn for each lawn?

• $96

• $12

• $768

• $8

Water flows from a faucet at a rate of 5 gallons every 25 seconds. At this rate, how many gallons will flow from the faucet in 45 seconds?

• 9 gallons

• 5 gallons

• 11 gallons

• 40 gallons

Which is the "better buy"?  A 12 ounce can of corn for $1.92 of  a 20 ounce can of corn for $3.00?

• They are the same

• The  20 ounce can

• The 12 ounce can

One snowy day, the snow was falling at a rate of 3 inches per hour.  If it kept snowing at the same rate, now many inches would accumulate in 2½ hours

• 7 ½  inches

• 6 ½ inches

• 5 ½ inches

An eight pack of juice boxes costs $4.79, and a 12 pack of juice boxes cost $6.59. Use this information to calculate the better buy.

• 8 pack

• 12 pack

A car is going 50 miles per hour. A rate that describes this would have units of

• Miles and cars

• Miles and hours

• Miles only

• Hours only

There are 1600 calories in the 5 cups of dog food Mike gives his adult dog. Mike gives his puppy 3 cups of the same dog food. How many calories are in the 3 cup serving?

• 800 calories

• 960 calories

• 640 calories

• 3200 calories