Adam pays $3.00 for a sticker and a bead.
The sticker costs 5 times as much as the bead.
- What is the cost of 1 sticker?
- How much is the cost of 3 beads and 4 stickers?
(a)
Cost of a bead = 1 u
Cost of a sticker = 5 u
Total cost of a bead and a sticker
= 1 u + 5 u
= 6 u
6 u = 3.00
1 u = 3.00 ÷ 6 = 0.50
Cost of the sticker
= 5 u
= 5 x 0.50
= $2.50
(b)
Cost of 3 beads and 4 stickers
= 3 x 1 u + 4 x 5 u
= 3 u + 20 u
= 23 u
= 23 x 0.50
= $11.50
Answer(s): (a) $2.50; (b) $11.50