1 bead and 1 sticker cost $17.
1 marble and 1 bead cost $6.
1 marble and 1 sticker cost $19.
- How much is 1 marble?
- How much is 1 sticker?
- How much is 1 bead?
Cost of 2 beads, 2 stickers and 2 marbles
= 17 + 6 + 19
= $42
Cost of 1 bead, 1 sticker and 1 marble
= 42 ÷ 2
= $21
(a)
Cost of 1 marble
= 21 - 17
= $4
(b)
Cost of 1 sticker
= 21 - 6
= $15
(c)
Cost of 1 bead
= 21 - 19
= $2
Answer(s): (a) $4; (b) $15; (c) $2