Adam pays $4.00 for a bead and a sticker.
The bead costs 4 times as much as the sticker.
- What is the cost of 1 bead?
- How much is the cost of 2 stickers and 3 beads?
(a)
Cost of a sticker = 1 u
Cost of a bead = 4 u
Total cost of a sticker and a bead
= 1 u + 4 u
= 5 u
5 u = 4.00
1 u = 4.00 ÷ 5 = 0.80
Cost of the bead
= 4 u
= 4 x 0.80
= $3.20
(b)
Cost of 2 stickers and 3 beads
= 2 x 1 u + 3 x 4 u
= 2 u + 12 u
= 14 u
= 14 x 0.80
= $11.20
Answer(s): (a) $3.20; (b) $11.20