1 marble and 1 sticker cost $15.
1 bead and 1 marble cost $12.
1 bead and 1 sticker cost $19.
- How much is 1 bead?
- How much is 1 sticker?
- How much is 1 marble?
Cost of 2 marbles, 2 stickers and 2 beads
= 15 + 12 + 19
= $46
Cost of 1 marble, 1 sticker and 1 bead
= 46 ÷ 2
= $23
(a)
Cost of 1 bead
= 23 - 15
= $8
(b)
Cost of 1 sticker
= 23 - 12
= $11
(c)
Cost of 1 marble
= 23 - 19
= $4
Answer(s): (a) $8; (b) $11; (c) $4