1 sticker and 1 marble cost $10.
1 bead and 1 sticker cost $9.
1 bead and 1 marble cost $13.
- How much is 1 bead?
- How much is 1 marble?
- How much is 1 sticker?
Cost of 2 stickers, 2 marbles and 2 beads
= 10 + 9 + 13
= $32
Cost of 1 sticker, 1 marble and 1 bead
= 32 ÷ 2
= $16
(a)
Cost of 1 bead
= 16 - 10
= $6
(b)
Cost of 1 marble
= 16 - 9
= $7
(c)
Cost of 1 sticker
= 16 - 13
= $3
Answer(s): (a) $6; (b) $7; (c) $3