Mrs. Dalloway made 85 tarts. If she wants to fill 10 boxes with the same number of tarts, how many more tarts should she make?

tarts

85 ÷ 10 = 8 r 5

So, if she wanted to fill 10 boxes with the number of tarts, each box should had 8 tarts, and 5 tarts left.

Thus, 10 - 5 = 5, if 5 more tarts were made, each box would have 1 more tart.