1 bead and 1 sticker cost $15.
1 marble and 1 bead cost $13.
1 marble and 1 sticker cost $16.
- How much is 1 marble?
- How much is 1 sticker?
- How much is 1 bead?
Cost of 2 beads, 2 stickers and 2 marbles
= 15 + 13 + 16
= $44
Cost of 1 bead, 1 sticker and 1 marble
= 44 ÷ 2
= $22
(a)
Cost of 1 marble
= 22 - 15
= $7
(b)
Cost of 1 sticker
= 22 - 13
= $9
(c)
Cost of 1 bead
= 22 - 16
= $6
Answer(s): (a) $7; (b) $9; (c) $6