Question

Duane and mick are saving their money to build a tree house.Duane adds $5 to their piggy bank every other week.Mick adds $2 every week so far they have saved $45.gow many weeks have they been saving their money

Answer 1

2 + 7 + 2 + 7 + 2 + 7 + 2 + 7 + 2 + 7 = 45
7 = 5 + 2 
10 weeks 

they have been saving their money for 10 weeks

Answer 2

Add and then subtract the number to get ur answer