1 bead and 1 sticker cost $16.
1 marble and 1 bead cost $3.
1 marble and 1 sticker cost $17.
- How much is 1 marble?
- How much is 1 sticker?
- How much is 1 bead?
Cost of 2 beads, 2 stickers and 2 marbles
= 16 + 3 + 17
= $36
Cost of 1 bead, 1 sticker and 1 marble
= 36 ÷ 2
= $18
(a)
Cost of 1 marble
= 18 - 16
= $2
(b)
Cost of 1 sticker
= 18 - 3
= $15
(c)
Cost of 1 bead
= 18 - 17
= $1
Answer(s): (a) $2; (b) $15; (c) $1