Adam pays $32 for 2 stickers and 3 beads.
2 stickers cost as much as 1 bead.
- How much is 1 sticker?
- How much is 1 bead?
- How much is 2 beads and 5 stickers?
(a)
Choose the smaller group to be 1 u.
Cost of 1 sticker = 1 u
Cost of 2 stickers = 2 u
Cost of 1 bead = 2 u
Cost of 2 stickers
= 2 x 1 u
= 2 u
Cost of 3 beads
= 3 x 2 u
= 6 u
Total cost of 2 stickers and 3 beads
= 2 u + 6 u
= 8 u
8 u = 32
1 u = 32 ÷ 8 = 4
Cost of 1 sticker
= 1 u
= $4
(b)
Cost of 1 bead
= 2 u
= 2 x 4
= $8
(c)
Cost of 2 beads and 5 stickers
= 2 x 2 u + 5 x 1 u
= 4 u + 5 u
= 9 u
= 9 x 4
= $36
Answer(s): (a) $4; (b) $8; (c) $36
