Ratios and Percents in Math

In the Central City Grand Prix, out of 30 cars that started the race, 12 of them finished. What percent of the cars did not finish the race?

• 20%

• 40%

• 60%

• 80%

12 ounce shampoo bottle lasts Mike 16 weeks.  How long would you expect an 18-ounce bottle of the same brand to last him?

• 24 weeks

• 6 weeks

• 30 weeks

• 20 weeks

Find the tip amount on a $20 lunch if you leave a 20% tip.

• $ .40

• $ 2.00

• $ 4

• $ 24

Sam bought an $85.00 jacket for 40% off of the regular price.  How much did he pay for the jacket? 

• 75

• 51

• 36

• 34

This morning, Albert took a history test. He got 76 problems right and 19 problems wrong. What percentage did Albert get right?

• 80%

• 75%

• 25%

Sharon makes money by commission rates. She gets 17% of everything she sells. If Sharon sold $37000 worth of items this month, what is her salary for the month?

• $14,800

• $5,180

• $629

• $6,290

At a sale, shirts were sold for $15 each. This price was 80% of their original price. What was the original price?

• $12

• $16

• $18.75

• $23.12

A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answers correctly?

• 25 problems

• 16 problems

• 18 problems

• 9 problems

Based on the constant of proportionality from the table, how much money would be earned if 5 phones were sold?

• $43

• $215

• $210

• $200

What is 9/100 as a percent?

• 9%

• 90%

• 19%

• 10%