1 marble and 1 bead cost $13.
1 sticker and 1 marble cost $11.
1 sticker and 1 bead cost $16.
- How much is 1 sticker?
- How much is 1 bead?
- How much is 1 marble?
Cost of 2 marbles, 2 beads and 2 stickers
= 13 + 11 + 16
= $40
Cost of 1 marble, 1 bead and 1 sticker
= 40 ÷ 2
= $20
(a)
Cost of 1 sticker
= 20 - 13
= $7
(b)
Cost of 1 bead
= 20 - 11
= $9
(c)
Cost of 1 marble
= 20 - 16
= $4
Answer(s): (a) $7; (b) $9; (c) $4