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 15.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 3 + 15
= 18
Small difference
= 7 - 4
= 3
Number of friends that Adam gives to
= 18 ÷ 3
= 6
(b)
Number of stickers that Adam buys
= 6 x 4 + 3
= 24 + 3
= 27
Answer(s): (a) 6; (b) 27