Adam buys some stickers for his friends.
If he gives each of them 10 stickers, he has 10 stickers left.
If he gives each of them 12 stickers, he has 4 stickers left.
- How many friends are there?
- How many stickers does Adam buy?
(a)
Big difference
= 10 - 4
= 6
Small difference
= 12 - 10
= 2
Number of friends that Adam gives to
= 6 ÷ 2
= 3
(b)
Number of stickers that Adam buys
= 3 x 10 + 10
= 30 + 10
= 40
Answer(s): (a) 3; (b) 40