Adam buys some stickers for his friends.
If he gives each of them 4 stickers, he has 3 stickers left.
If he gives each of them 7 stickers, he needs another 21.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 3 + 21
= 24
Small difference
= 7 - 4
= 3
Number of friends that Adam gives to
= 24 ÷ 3
= 8
(b)
Number of stickers that Adam buys
= 8 x 4 + 3
= 32 + 3
= 35
Answer(s): (a) 8; (b) 35