Adam pays $48 for 4 stickers and 3 beads.
4 stickers cost as much as 1 bead.
- How much is 1 sticker?
- How much is 1 bead?
- How much is 2 beads and 4 stickers?
(a)
Choose the smaller group to be 1 u.
Cost of 1 sticker = 1 u
Cost of 4 stickers = 4 u
Cost of 1 bead = 4 u
Cost of 4 stickers
= 4 x 1 u
= 4 u
Cost of 3 beads
= 3 x 4 u
= 12 u
Total cost of 4 stickers and 3 beads
= 4 u + 12 u
= 16 u
16 u = 48
1 u = 48 ÷ 16 = 3
Cost of 1 sticker
= 1 u
= $3
(b)
Cost of 1 bead
= 4 u
= 4 x 3
= $12
(c)
Cost of 2 beads and 4 stickers
= 2 x 4 u + 4 x 1 u
= 8 u + 4 u
= 12 u
= 12 x 3
= $36
Answer(s): (a) $3; (b) $12; (c) $36