Adam pays $2.10 for a sticker and a bead.
The sticker costs 2 times as much as the bead.
- What is the cost of 1 sticker?
- How much is the cost of 5 beads and 4 stickers?
(a)
Cost of a bead = 1 u
Cost of a sticker = 2 u
Total cost of a bead and a sticker
= 1 u + 2 u
= 3 u
3 u = 2.10
1 u = 2.10 ÷ 3 = 0.70
Cost of the sticker
= 2 u
= 2 x 0.70
= $1.40
(b)
Cost of 5 beads and 4 stickers
= 5 x 1 u + 4 x 2 u
= 5 u + 8 u
= 13 u
= 13 x 0.70
= $9.10
Answer(s): (a) $1.40; (b) $9.10