Question

Rex, an energetic dog, has 11 bones buried in the backyard. His owner gives him 2 more bones each week, which he immediately buries. How many weeks will it take him to have 29 bones buried.

Answer 1

Easy. If he already has 11 bones in his backyard, do 29 - 11, which gets you 18, the number he needs to bury. Each week he gets 2, so 2 x 9 is 18, meaning it takes 9 more weeks to get 18 bones buried. Hope I helped!

Another way to solve after getting 18 is 18 divided by 2.

Answer 2

29 - 11 = 18

18 divided by 2 = 9

9 weeks