Missing Values in Proportions and Unit Rates

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

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?

• $.50 per pound

• $1.25 per pound

• $3 per pound

• $2.50 per pound

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

• 0

• 3

• 1

• 2

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

• $96

• $12

• $768

• $8

Coco is packing kettle corn into bags for snacks. She knows that she packs 6.4 ounces into 4 bags. She creates the following table to find other values for the number of ounces packed to the number of bags used in the same proportion.
Using the first row, Coco ​ (a)   to find the missing value for the second row. If she uses the first row to find the value in the third row, Coco will ​ (b)   .

• divides by 4

• multiply by 2.25

• subtracts by 4

• multiplies by 4

• subtracts 2.25

• divide 2.25

A machine can pack 70 boxes of spaghetti in 5 minutes. At this rate, how many boxes can they pack in 8 minutes.

• 35 boxes

• 14 boxes

• 112 boxes

• 560 boxes

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

What are the missing values in this ratio table?

• 4 peach trees, 14 apple trees

• 10 peach trees, 10 apple trees

• 16 peach trees, 8 apple trees

• 14 peach trees, 4 apple trees

Flying unicorns are on sale for $350 for a box of 5. What is the unit cost for one flying unicorn?

• $350/1

• $70/1

• $500/1

• $250/1

Answer explanation

I don't care where you are--that's a GREAT deal.

Two or more ratios that are equivalent are...

• triplets

• unit rates

• proportions

• pi