Question

Duane and nick are saving their money to build a tree house. Duane a adds $5 to their piggybank every other week. Mick adds $2 every week. So far they have saved $45. How many weeks have they been saving their money?

Answer 1

10 weeks, 10 times 2 is 20, and 5 times 10 is 50, divided by 2 is 25, add 20 to 25 which is 45