1 sticker and 1 bead cost $18.
1 marble and 1 sticker cost $4.
1 marble and 1 bead cost $18.
- How much is 1 marble?
- How much is 1 bead?
- How much is 1 sticker?
Cost of 2 stickers, 2 beads and 2 marbles
= 18 + 4 + 18
= $40
Cost of 1 sticker, 1 bead and 1 marble
= 40 ÷ 2
= $20
(a)
Cost of 1 marble
= 20 - 18
= $2
(b)
Cost of 1 bead
= 20 - 4
= $16
(c)
Cost of 1 sticker
= 20 - 18
= $2
Answer(s): (a) $2; (b) $16; (c) $2