Adam buys some stickers for his friends.
If he gives each of them 6 stickers, he needs another 9.
If he gives each of them 8 stickers, he needs another 15.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 15 - 9
= 6
Small difference
= 8 - 6
= 2
Number of friends that Adam gives to
= 6 ÷ 2
= 3
(b)
Number of stickers that Adam buys
= 3 x 6 - 9
= 18 - 9
= 9
Answer(s): (a) 3; (b) 9