Adam pays $1.50 for a sticker and a bead.
The sticker costs 4 times as much as the bead.
- What is the cost of 1 sticker?
- How much is the cost of 2 beads and 3 stickers?
(a)
Cost of a bead = 1 u
Cost of a sticker = 4 u
Total cost of a bead and a sticker
= 1 u + 4 u
= 5 u
5 u = 1.50
1 u = 1.50 ÷ 5 = 0.30
Cost of the sticker
= 4 u
= 4 x 0.30
= $1.20
(b)
Cost of 2 beads and 3 stickers
= 2 x 1 u + 3 x 4 u
= 2 u + 12 u
= 14 u
= 14 x 0.30
= $4.20
Answer(s): (a) $1.20; (b) $4.20