1 sticker and 1 bead cost $10.
1 marble and 1 sticker cost $8.
1 marble and 1 bead cost $16.
- How much is 1 marble?
- How much is 1 bead?
- How much is 1 sticker?
Cost of 2 stickers, 2 beads and 2 marbles
= 10 + 8 + 16
= $34
Cost of 1 sticker, 1 bead and 1 marble
= 34 ÷ 2
= $17
(a)
Cost of 1 marble
= 17 - 10
= $7
(b)
Cost of 1 bead
= 17 - 8
= $9
(c)
Cost of 1 sticker
= 17 - 16
= $1
Answer(s): (a) $7; (b) $9; (c) $1