Adam buys some stickers for his friends.
If he gives each of them 4 stickers, he has 15 stickers left.
If he gives each of them 6 stickers, he has 7 stickers left.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 15 - 7
= 8
Small difference
= 6 - 4
= 2
Number of friends that Adam gives to
= 8 ÷ 2
= 4
(b)
Number of stickers that Adam buys
= 4 x 4 + 15
= 16 + 15
= 31
Answer(s): (a) 4; (b) 31