Question

A student starts working for $12 per hour. After a year. he gets a raise and now earns $13.50 per hour. Which of the following represents the percent increase in the student’s wage?

a. 1.5%
b. 150%
c. 12.5%
d. 10%

Answer 1

Answer: c. 12.5%

Explanation:

To find the percent increase in the student's wage, we need to calculate the difference between his old wage of $12 per hour and his new wage of $13.50 per hour, and then divide that difference by his old wage and multiply by 100%. This gives us the following calculation:

(13.50 - 12) / 12 * 100% = 1.50 / 12 * 100% = 0.125 * 100% = 12.5%

Therefore, the student's wage increased by 12.5%, which is the same as saying it increased by 0.125 or 1.25/10. This corresponds to answer choice c.