Adam pays $4.20 for a bead and a sticker.
The bead costs 2 times as much as the sticker.
- What is the cost of 1 bead?
- How much is the cost of 5 stickers and 2 beads?
(a)
Cost of a sticker = 1 u
Cost of a bead = 2 u
Total cost of a sticker and a bead
= 1 u + 2 u
= 3 u
3 u = 4.20
1 u = 4.20 ÷ 3 = 1.40
Cost of the bead
= 2 u
= 2 x 1.40
= $2.80
(b)
Cost of 5 stickers and 2 beads
= 5 x 1 u + 2 x 2 u
= 5 u + 4 u
= 9 u
= 9 x 1.40
= $12.60
Answer(s): (a) $2.80; (b) $12.60