1 sticker and 1 bead cost $20.
1 marble and 1 sticker cost $2.
1 marble and 1 bead cost $20.
- How much is 1 marble?
- How much is 1 bead?
- How much is 1 sticker?
Cost of 2 stickers, 2 beads and 2 marbles
= 20 + 2 + 20
= $42
Cost of 1 sticker, 1 bead and 1 marble
= 42 ÷ 2
= $21
(a)
Cost of 1 marble
= 21 - 20
= $1
(b)
Cost of 1 bead
= 21 - 2
= $19
(c)
Cost of 1 sticker
= 21 - 20
= $1
Answer(s): (a) $1; (b) $19; (c) $1