Adam pays $3.60 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 3 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 = 3.60
1 u = 3.60 ÷ 3 = 1.20
Cost of the bead
= 2 u
= 2 x 1.20
= $2.40
(b)
Cost of 5 stickers and 3 beads
= 5 x 1 u + 3 x 2 u
= 5 u + 6 u
= 11 u
= 11 x 1.20
= $13.20
Answer(s): (a) $2.40; (b) $13.20