Percent Proportion
What is the percent proportion equation?
part/whole = percent/100
What is the percent change equation?
change/original = percent/100
What is a discount or markdown?
When something is taking a percentage away from a price.
What is the simple interest equation?
Interest = Principal x Rate x Time
What is 30% of 400?
120
Jim went to the store to buy shampoo. The bottle of shampoo used to be 32 oz, but now it is 40oz. What is the percent change of the shampoo?
25%
What is percent markup?
When there is a percentage added to the cost of something.
Sadie deposited $700 into her savings account. She earned 7% interest on this amount for 7 years. How much was in her account after the 7 years?
$1043
A car dealership has sold 17 cars in one day. That was 25% of their cars on the lot. How many cars did they start with that day?
68 Cars
The recommended time to take a test is 30 minutes. You take the test in 20 minutes. What is the percent change on the time you take your test?
33.3 repeated %
A shirt that I bought was originally $22. Today, it was on sale for 5% off. How much was the shirt after the sale?
$20.90
Taylor has $23,500 in student loans. Her loans have a 3% interest rate. If no payments on her loans are made, then how much will her loans be after 60 months?
$27,025
Marco is a waiter at a restaurant. He served a table with a $120 bill. The customers wanted to leave him a 19% tip. How much did they tip?
$22.80
Maddy and her friend bought two tickets to a concert. Each ticket cost $50, together the friends paid $125 which included parking. How much was the parking fee? What percent increase represents the change when parking is included in the final cost?
$25 and 25%
I went Christmas shopping at the mall, and they were having a 25% off everything sale. If I spent $450 before the sale. How much was my total after the sale?
$337.50
Jaylen earned $1200 in interest on a $10,000 loan. His loan rate was 5.45%. How many years did he have this loan? Round to the nearest hundreth
2.20 years
A local pumpkin patch usually yields 100 pumpkins a year. Since the weather was favorable, 15% more pumpkins grew than expected. Unfortunately, animals ate 20% of all the pumpkins that grew. How many pumpkins were left?
92 Pumpkins
A flower garden has a length of 8ft and a width of 15ft. Sally wanted to make her garden much bigger. She increased the length by 25% and the width by 50%. What is the new area of her garden? She wants to plant watermelons, but they each need 8 square feet to grow. How many watermelons could she plant?
225 feet and 28 watermelons