Adam pays $1.60 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 5 stickers and 3 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 = 1.60
1 u = 1.60 ÷ 8 = 0.20
Cost of the bead
= 7 u
= 7 x 0.20
= $1.40
(b)
Cost of 5 stickers and 3 beads
= 5 x 1 u + 3 x 7 u
= 5 u + 21 u
= 26 u
= 26 x 0.20
= $5.20
Answer(s): (a) $1.40; (b) $5.20