Question

Shelley 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 Shelley earn last week in tips?

Answer 1

60 bucks in tips last week

Explanation:

Answer 2

To determine the Earnings of Shelley last week, we need to make relations with the values that are given. We let x as the total amount she earned last week by x and y as the additional amount she earned this week We do as follows:

20% additional amount she earned this week = y / 72 - y
y = $ 12

x = 72 - 12 = $60 total earnings last week