Adam buys some stickers for his friends.
If he gives each of them 6 stickers, he has 3 stickers left.
If he gives each of them 9 stickers, he needs another 18.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 3 + 18
= 21
Small difference
= 9 - 6
= 3
Number of friends that Adam gives to
= 21 ÷ 3
= 7
(b)
Number of stickers that Adam buys
= 7 x 6 + 3
= 42 + 3
= 45
Answer(s): (a) 7; (b) 45