Lesson 16
Finding the Percentage
Let’s find percentages in general.
Problem 1
A sign in front of a roller coaster says "You must be 40 inches tall to ride." What percentage of this height is:
 34 inches?
 54 inches?
Problem 2
At a hardware store, a tool set normally costs $80. During a sale this week, the tool set costs $12 less than usual. What percentage of the usual price is the savings? Explain or show your reasoning.
Problem 3
A bathtub can hold 80 gallons of water. The faucet flows at a rate of 4 gallons per minute. What percentage of the tub will be filled after 6 minutes?
Problem 4
The sale price of every item in a store is 85% of its usual price.
 The usual price of a backpack is $30, what is its sale price?
 The usual price of a sweatshirt is $18, what is its sale price?
 The usual price of a soccer ball is $24.80, what is its sale price?
Problem 5
A shopper needs 48 hot dogs. The store sells identical hot dogs in 2 differently sized packages. They sell a sixpack of hot dogs for $2.10, and an eightpack of hot dogs for $3.12. Should the shopper buy 8 sixpacks, or 6 eightpacks? Explain your reasoning.
Problem 6
Elena is 56 inches tall.

What is her height in centimeters? (Note: 100 inches = 254 centimeters)

What is her height in meters?