Sally is selling boxes of crackers for her scout troop's fund-raiser. If she sells 50% more on Sunday than she sold on Saturday, then she'll have sold a total of 150 boxes on the two days. How many boxes did she sell on Saturday?
Let's be accurate as possible. Think before you answer.
60
Let S be the number of boxes sold on Saturday.

S + 1.

5S = 150.

2.

5S = 150.

S = 60.

Sally sold 60 boxes on Saturday.

.

The answer is 60