1 sticker costs $4.
1 box of 30 stickers costs $10.
Adam needs 79 stickers.
- What is the minimum number of boxs that Adam should buy?
- How much will Adam spend?
(a)
Sets of 30 stickers
= 79 ÷ 30
= 2 r 19
Amount that Adam has to spend to buy 19 stickers
= 19 x 4
= $76
To buy 19 stickers at $76 is more expensive than 30 stickers at $10.
Minimum number of boxs that Adam has to buy
= 2 + 1
= 3
(b)
Amount that Adam has to spend on 3 boxs
= 3 x 10
= $30
Answer(s): (a) 3; (b) $30