1 bead and 1 marble cost $16.
1 sticker and 1 bead cost $4.
1 sticker and 1 marble cost $18.
- How much is 1 sticker?
- How much is 1 marble?
- How much is 1 bead?
Cost of 2 beads, 2 marbles and 2 stickers
= 16 + 4 + 18
= $38
Cost of 1 bead, 1 marble and 1 sticker
= 38 ÷ 2
= $19
(a)
Cost of 1 sticker
= 19 - 16
= $3
(b)
Cost of 1 marble
= 19 - 4
= $15
(c)
Cost of 1 bead
= 19 - 18
= $1
Answer(s): (a) $3; (b) $15; (c) $1