Adam pays $44 for 4 beads and 2 stickers.
3 beads cost as much as 4 stickers.
- How much is 1 bead?
- How much is 1 sticker?
- How much is 5 stickers and 2 beads?
(a)
LCM of 3 and 4 = 12
Cost of 3 beads = 12 u
Cost of 1 bead = 12 u ÷ 3 = 4 u
Cost of 4 stickers = 12 u
Cost of 1 sticker = 12 u ÷ 4 = 3 u
Cost of 4 beads = 4 x 4 u = 16 u
Cost of 2 stickers = 2 x 3 u = 6 u
Total cost of 4 beads and 2 stickers
= 16 u + 6 u
= 22 u
22 u = 44
1 u = 44 ÷ 22 = 2
Cost of 1 bead
= 4 u
= 4 x 2
= $8
(b)
Cost of 1 sticker
= 3 u
= 3 x 2
= $6
(c)
Cost of 5 stickers and 2 beads
= 5 x 3 u + 2 x 4 u
= 15 u + 8 u
= 23 u
= 23 x 2
= $46
Answer(s): (a) $8; (b) $6; (c) $46