Base, Rate, Percentage Word Problems

In a class of 30 children, 60% of them are girls. How many girls are there in the class?

Answer explanation

We need to find the percentage:

30 × 0.6 = 18

At a bookstore, 15% of 40 students who were shopping bought a dictionary. How many students bought a dictionary?

Answer explanation

We need to find the percentage:

40 × 0.15 = 6

In UPIS, 25% of the teachers are teaching Math. If there were 50 Math teachers, how many teachers are there in the school?

Answer explanation

We need to find the base:

50 ÷ 0.25 = 200

At the Ayala Museum, 40% of the visitors are children. There are 36 children at the museum. How many visitors are there at the museum?

Answer explanation

We need to find the base:

36 ÷ 0.4 = 90

In an online class 180 students attended class out of 200 students. Find the percentage of students who attended class.

• 85 %

• 88 %

• 90 %

• 95 %

Out of 200 students, 150 passed the exam. What is the percentage of students who passed?

• 75%

• 50%

• 60%

• 90%

A sports store received a shipment of 400 baseball gloves. 30% were left-handed. How many left-handed gloves were in the shipment?

• 160

• 120

• 1200

• 190

You are downloading a program onto your computer that is 85 megabytes. As you are working, you notice that only 60% of the program has been downloaded so far. How many megabytes of the program have been downloaded so far?

• 48 megabytes

• 51 megabytes

• 54 megabytes

• 56 megabytes

out of 40 students in class, 25% are boys. Find the number of boys in the class.

• 20

• 10

• 25

Sara decided to look at new and used vans. Sara found a used van for $30,000. A new van is $50,000, so what percent of the price of a new van does Sara pay for a used van? Round your answer to the nearest whole number if necessary.

• 20%

• 40%

• 60%

• 80%