Adam pays $14 for 5 beads and 4 stickers.
2 beads cost as much as 4 stickers.
- How much is 1 bead?
- How much is 1 sticker?
- How much is 2 stickers and 5 beads?
(a)
LCM of 2 and 4 = 4
Cost of 2 beads = 4 u
Cost of 1 bead = 4 u ÷ 2 = 2 u
Cost of 4 stickers = 4 u
Cost of 1 sticker = 4 u ÷ 4 = 1 u
Cost of 5 beads = 5 x 2 u = 10 u
Cost of 4 stickers = 4 x 1 u = 4 u
Total cost of 5 beads and 4 stickers
= 10 u + 4 u
= 14 u
14 u = 14
1 u = 14 ÷ 14 = 1
Cost of 1 bead
= 2 u
= 2 x 1
= $2
(b)
Cost of 1 sticker
= 1 u
= 1 x 1
= $1
(c)
Cost of 2 stickers and 5 beads
= 2 x 1 u + 5 x 2 u
= 2 u + 10 u
= 12 u
= 12 x 1
= $12
Answer(s): (a) $2; (b) $1; (c) $12
