1 sticker and 1 marble cost $15.
1 bead and 1 sticker cost $13.
1 bead and 1 marble cost $20.
- How much is 1 bead?
- How much is 1 marble?
- How much is 1 sticker?
Cost of 2 stickers, 2 marbles and 2 beads
= 15 + 13 + 20
= $48
Cost of 1 sticker, 1 marble and 1 bead
= 48 ÷ 2
= $24
(a)
Cost of 1 bead
= 24 - 15
= $9
(b)
Cost of 1 marble
= 24 - 13
= $11
(c)
Cost of 1 sticker
= 24 - 20
= $4
Answer(s): (a) $9; (b) $11; (c) $4