Question

A student raises her grade average from a 75 to a 90. What was the percent of increase in the

student's grade average? Round your answer to the nearest tenth of a percent if necessary

Answer 1

Answer: 20%

Step-by-step explanation:

20% is the correct answer because:

(new grade - old grade) / old grade and everything we will multiply with the whole number, 100% and that is actually:

90-75 = 15

15 / 75 = 0,2

0,2 x 100% = 20 %