Adam buys some stickers for his friends.
If he gives each of them 8 stickers, he needs another 3.
If he gives each of them 11 stickers, he needs another 12.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 12 - 3
= 9
Small difference
= 11 - 8
= 3
Number of friends that Adam gives to
= 9 ÷ 3
= 3
(b)
Number of stickers that Adam buys
= 3 x 8 - 3
= 24 - 3
= 21
Answer(s): (a) 3; (b) 21