Ronna answered 18 of the 20 questions on her second math test correctly. On the first test, she had answered only 15 of 20 questions correctly. What was the percent increase in her score from her first test to the second test? A. 15% B. 35% C. 75% D. 90

Question

21 September, 06:30

+2

Answers (1)

Know the Answer?

Elise Russell · Answer 1

A: 15%

Step-by-step explanation:

First test:

15 : 20 = 0.75

0.75 * 100 = 75%

Second Test:

18 : 20 = 0.9

0.9 * 100 = 90%

90% - 75% = 15%