Adam buys some stickers for his friends.
If he gives each of them 5 stickers, he needs another 4.
If he gives each of them 7 stickers, he needs another 18.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 18 - 4
= 14
Small difference
= 7 - 5
= 2
Number of friends that Adam gives to
= 14 ÷ 2
= 7
(b)
Number of stickers that Adam buys
= 7 x 5 - 4
= 35 - 4
= 31
Answer(s): (a) 7; (b) 31