Adam pays $1.80 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 2 stickers and 5 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 = 1.80
1 u = 1.80 ÷ 3 = 0.60
Cost of the bead
= 2 u
= 2 x 0.60
= $1.20
(b)
Cost of 2 stickers and 5 beads
= 2 x 1 u + 5 x 2 u
= 2 u + 10 u
= 12 u
= 12 x 0.60
= $7.20
Answer(s): (a) $1.20; (b) $7.20