Question

Tiana got 12 questions right on a practice test. On her next attempt, she got 15 questions right. What was her percent increase?

Answer 1

Tiana's percent increase in the number of questions she got right from the first to the second practice test is 25%.

Step-by-step explanation:

To calculate Tiana's percent increase in the number of questions she got right from her first to her second practice test, we use the formula for percent increase which is:

((new value - original value) / original value) × 100%

In this case, her original value is 12 questions right, and her new value is 15 questions right. So the percent increase is calculated as follows:

((15 - 12) / 12) × 100% = (3 / 12) × 100% = 0.25 × 100% = 25%

Therefore, Tiana's percent increase in the number of questions she got right is 25%.