Adam buys some stickers for his friends.
If he gives each of them 5 stickers, he has 3 stickers left.
If he gives each of them 9 stickers, he needs another 13.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 3 + 13
= 16
Small difference
= 9 - 5
= 4
Number of friends that Adam gives to
= 16 ÷ 4
= 4
(b)
Number of stickers that Adam buys
= 4 x 5 + 3
= 20 + 3
= 23
Answer(s): (a) 4; (b) 23