Adam pays $3.60 for a bead and a sticker.
The bead costs 8 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 = 8 u
Total cost of a sticker and a bead
= 1 u + 8 u
= 9 u
9 u = 3.60
1 u = 3.60 ÷ 9 = 0.40
Cost of the bead
= 8 u
= 8 x 0.40
= $3.20
(b)
Cost of 5 stickers and 2 beads
= 5 x 1 u + 2 x 8 u
= 5 u + 16 u
= 21 u
= 21 x 0.40
= $8.40
Answer(s): (a) $3.20; (b) $8.40