Adam pays $27 for 5 stickers and 2 beads.
6 stickers cost as much as 3 beads.
- 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 6 stickers = Cost of 3 beads
Cost of 2 stickers = Cost of 1 bead
Cost of 1 sticker = 1 u
Cost of 1 bead = 2 u
Cost of 5 stickers
= 5 x 1 u
= 5 u
Cost of 2 beads
= 2 x 2 u
= 4 u
Total cost of 5 stickers and 2 beads
= 5 u + 4 u
= 9 u
9 u = 27
1 u = 27 ÷ 9 = 3
Cost of 1 sticker = 1 u = $3
(b)
Cost of 1 bead
= 2 u
= 2 x 3
= $6
(c)
Cost of 2 beads and 4 stickers
= 2 x 2 u + 4 x 1 u
= 4 u + 4 u
= 8 u
= 8 x 3
= $24
Answer(s): (a) $3; (b) $6; (c) $24
