After how many days will your sister earn as much as you?

Question

Your sister can get 30 per day, d, for selling clothes at the market. But she has to pay 60 ast first for renting a stand. You can get 20 per day for helping your neighbors rake lawns.

Answer 1

Sister’s Makes: 30d - 60

You make: 20d

where d is the number of days. Equate the two above and solve for d:

30d - 60 = 20d

10d = 60

d = 6 days