1 sticker costs $5.
1 packet of 50 stickers costs $10.
Adam needs 90 stickers.
- What is the minimum number of packets that Adam should buy?
- How much will Adam spend?
(a)
Sets of 50 stickers
= 90 ÷ 50
= 1 r 40
Amount that Adam has to spend to buy 40 stickers
= 40 x 5
= $200
To buy 40 stickers at $200 is more expensive than 50 stickers at $10.
Minimum number of packets that Adam has to buy
= 1 + 1
= 2
(b)
Amount that Adam has to spend on 2 packets
= 2 x 10
= $20
Answer(s): (a) 2; (b) $20