Question

Kelly makes $10 more per hour than her regular pay when she is working overtime. Yesterday, she worked 8 regular hours and 4 overtime hours and earned $160.

What is Kelly's regular pay per hour?

$10 per hour
$12 per hour
$16 per hour
$20 per hour

Answer 1

Let r be her regular hourly rate. Overtime pay is r + 10.

8r + 4(r + 10) = 160
8r + 4r + 40 = 160
12r = 120
r = 10

Answer: $10 per hour.