Ratios and Percent Proportion Word Problems

two equal ratios

• rate

• proportion

• percent

• ratio

Set up the following proportion: Pens are 3 for $0.69 at the supply store. What proportion can be used to find c, the amount it will cost Mrs. Faber to buy 180 pens?

Set up the following proportion: It cost Jericho and his 3 friends $20 to get into the skating rink. What proportion can be used to find c, the amount it will cost Jericho’s parents if they have Jericho’s birthday party at the skating rink and pay for Jericho and all 24 of his classmates?

Set up this proportion: Vito uses 9 liters of water to water 24 flower pots. He is wondering how many liters of water (w), it would take to water 40 flower pots. He assumes he'll use the same amount of water on each pot.

Alice earned $20.40 in 3 hours. At the same rate, what would Alice make in 8 hours?

What is the PART in this word problem?

• 12

• 4

• We don't know yet

• 100

What is the WHOLE in this word problem?

• 30

• 10

• We don't know yet

• 100

Which of the following proportions would you use to solve this problem?

"What is 10% of 50?"

Which part of the problem is missing?

"18 is 30% of what number?"

• part

• whole

• percent

Which of the following proportions would you use to solve this problem?"What percent of 50 is 5?"