Solving for a Percent

Approximately 60% of a human's body weight is water. If Emily weighs 120 pounds, how much of her weight is water?

Minimum wage is $10.00 an hour today. This is 250% of what I made at my first job in high school. What was the hourly wage at my first job?

• $2.50 an hour

• $25 an hour

• $4 an hour

• $14 an hour

• $8 an hour

It takes Myles 20 minutes to walk to school. It takes Sophie 80% as long to walk to school. How many minutes faster did Sophie arrive at school?

Oliver got 75% of the total questions on his math final correct. If he got 24 questions correct, how many questions were on the final?

• 18

• 32

• 30

• I do not know how to solve this.

Mira has a new puppy that weighs 9 pounds. The vet says that the puppy is now at about 30% of its adult weight. What will be the adult weight of the puppy?

Which of the following sentences accurately reflects the information given?

• 30% of puppy's adult weight is 9 pounds.

• 30% of 9 pounds is puppy's adult weight.

• I am not sure.

30% of the students surveyed said they had read at least one Harry Potter book. If 660 students answered that they had read a Harry Potter book, how many students were surveyed?

Typically in a percent problem, what follows the word OF?

ex: 50% OF _______ is 36.

• whole

• part

• percent

There are 36 carpenters in a crew. On a certain day, 29 were present. What percent showed up for work? (round to the nearest tenth)

• about 80.6%

• about 124.1%

• 36%

• 29%

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

A metal bar weighs 8.15 ounces. 93% of the bar is silver. How many ounces of silver are in the bar? (round to the nearest tenth)

• about 8.8 ounces

• about 8.15 onces

• about 7.6 ounces

• about 6.3 ounces