Adam pays $4.80 for a bead and a sticker.
The bead costs 7 times as much as the sticker.
- What is the cost of 1 bead?
- How much is the cost of 3 stickers and 5 beads?
(a)
Cost of a sticker = 1 u
Cost of a bead = 7 u
Total cost of a sticker and a bead
= 1 u + 7 u
= 8 u
8 u = 4.80
1 u = 4.80 ÷ 8 = 0.60
Cost of the bead
= 7 u
= 7 x 0.60
= $4.20
(b)
Cost of 3 stickers and 5 beads
= 3 x 1 u + 5 x 7 u
= 3 u + 35 u
= 38 u
= 38 x 0.60
= $22.80
Answer(s): (a) $4.20; (b) $22.80