Question

One day, I woke up and feeling generous, I took all the apples in my refrigerator and I decided to give them away. I went outside and gave one-half of my apples plus one to the first stranger I met. Then, I gave one-half of the remaining apples plus one to the second person I met and one-half of the remaining apples plus one to the third person. I had one apple left at the end. How many apples did I have when I left my house? use working backwards strategy

Answer 1

So you had 22 apples in your bag

Explanation:

Third person: received one-half plus one. Just do the reverse of that. Give yourself one and twice.

1 + 1 = 2 and 2 × 2 = 4. ( This makes sense because giving one-half of 4 plus one means giving 2 and then 1)

Second person: received one-half plus one. Just do the reverse of that. Give yourself one and twice.

4 + 1 = 5 and 5 × 2 = 10.

First person: received one-half plus one. Just do the reverse of that. Give yourself one and twice.

10 + 1 = 11 and 11 × 2 = 22.