Answer:
She scored 90 on her second math test.
Explanation:
A 20% increase is 120% of the original number. 120% is also just a multiplier of 1.2. Multiply the first score by 1.2 to get the second score:
90
20% of 75 is 7.5 times 2 which equals 15 so 15 plus 75 is 90.
1.6m questions
2.0m answers