Adam pays $45 for 6 beads and 3 stickers.
3 beads cost as much as 1 sticker.
- How much is 1 bead?
- How much is 1 sticker?
- How much is 5 stickers and 4 beads?
(a)
Choose the smaller group to be 1 u.
Cost of 1 bead = 1 u
Cost of 3 beads = 3 u
Cost of 1 sticker = 3 u
Cost of 6 beads
= 6 x 1 u
= 6 u
Cost of 3 stickers
= 3 x 3 u
= 9 u
Total cost of 6 beads and 3 stickers
= 6 u + 9 u
= 15 u
15 u = 45
1 u = 45 ÷ 15 = 3
Cost of 1 bead
= 1 u
= $3
(b)
Cost of 1 sticker
= 3 u
= 3 x 3
= $9
(c)
Cost of 5 stickers and 4 beads
= 5 x 3 u + 4 x 1 u
= 15 u + 4 u
= 19 u
= 19 x 3
= $57
Answer(s): (a) $3; (b) $9; (c) $57
