Adam pays $20 for 6 beads and 2 stickers.
2 beads cost as much as 1 sticker.
- How much is 1 bead?
- How much is 1 sticker?
- How much is 5 stickers and 3 beads?
(a)
Choose the smaller group to be 1 u.
Cost of 1 bead = 1 u
Cost of 2 beads = 2 u
Cost of 1 sticker = 2 u
Cost of 6 beads
= 6 x 1 u
= 6 u
Cost of 2 stickers
= 2 x 2 u
= 4 u
Total cost of 6 beads and 2 stickers
= 6 u + 4 u
= 10 u
10 u = 20
1 u = 20 ÷ 10 = 2
Cost of 1 bead
= 1 u
= $2
(b)
Cost of 1 sticker
= 2 u
= 2 x 2
= $4
(c)
Cost of 5 stickers and 3 beads
= 5 x 2 u + 3 x 1 u
= 10 u + 3 u
= 13 u
= 13 x 2
= $26
Answer(s): (a) $2; (b) $4; (c) $26