Adam pays $36 for 6 beads and 3 stickers.
4 beads cost as much as 1 sticker.
- How much is 1 bead?
- How much is 1 sticker?
- How much is 3 stickers and 5 beads?
(a)
Choose the smaller group to be 1 u.
Cost of 1 bead = 1 u
Cost of 4 beads = 4 u
Cost of 1 sticker = 4 u
Cost of 6 beads
= 6 x 1 u
= 6 u
Cost of 3 stickers
= 3 x 4 u
= 12 u
Total cost of 6 beads and 3 stickers
= 6 u + 12 u
= 18 u
18 u = 36
1 u = 36 ÷ 18 = 2
Cost of 1 bead
= 1 u
= $2
(b)
Cost of 1 sticker
= 4 u
= 4 x 2
= $8
(c)
Cost of 3 stickers and 5 beads
= 3 x 4 u + 5 x 1 u
= 12 u + 5 u
= 17 u
= 17 x 2
= $34
Answer(s): (a) $2; (b) $8; (c) $34