Adam buys some stickers for his friends.
If he gives each of them 8 stickers, he has 17 stickers left.
If he gives each of them 10 stickers, he has 9 stickers left.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 17 - 9
= 8
Small difference
= 10 - 8
= 2
Number of friends that Adam gives to
= 8 ÷ 2
= 4
(b)
Number of stickers that Adam buys
= 4 x 8 + 17
= 32 + 17
= 49
Answer(s): (a) 4; (b) 49