Question

A student earned a grade of 70% on a math test that had 20 problems. How many problems on this test did the student answer correctly?

Answer 1

9514 1404 393

Answer:

14

Explanation:

Assuming the grade is proportional to the number of problems answered, we have ...

a/20 = 70/100

a = 20(0.70) = 14 . . . . multiply by 20

The student answered 14 problems correctly.