1 sticker and 1 marble cost $14.
1 bead and 1 sticker cost $13.
1 bead and 1 marble cost $15.
- How much is 1 bead?
- How much is 1 marble?
- How much is 1 sticker?
Cost of 2 stickers, 2 marbles and 2 beads
= 14 + 13 + 15
= $42
Cost of 1 sticker, 1 marble and 1 bead
= 42 ÷ 2
= $21
(a)
Cost of 1 bead
= 21 - 14
= $7
(b)
Cost of 1 marble
= 21 - 13
= $8
(c)
Cost of 1 sticker
= 21 - 15
= $6
Answer(s): (a) $7; (b) $8; (c) $6