Question

Shelly earned 20% more money in tips waitressing this week than last week. This week she earned $72.00 in tips waitressing. How much money did Shelly earn last week in tips?

A 55
B 59
C 62
D 60

Answer 1

D

Explanation:

Let x be the earning of Shelly of last week.

x * 0.2 (20%) + x = 72

0.2x + x = 72

You multiply the whole equation by 10.

2x + 10x = 720

12x = 720

x = 60

Therefore, Shelly earned $60 last week, and the choice will be D.

Hope it helps.