Adam buys some stickers for his friends.
If he gives each of them 15 stickers, he has 2 stickers left.
If he gives each of them 17 stickers, he needs another 4.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 2 + 4
= 6
Small difference
= 17 - 15
= 2
Number of friends that Adam gives to
= 6 ÷ 2
= 3
(b)
Number of stickers that Adam buys
= 3 x 15 + 2
= 45 + 2
= 47
Answer(s): (a) 3; (b) 47