Adam spends $5 for 1 sticker and 1 marble.
The cost of 1 sticker is
14 the cost of 1 marble.
- How much is the marble?
- How much is the sticker less than the marble?
(a)
Cost of the sticker = 1 u
Cost of the marble = 4 u
Total cost of the sticker and the marble
= 1 u + 4 u
= 5 u
5 u = 5
1 u = 5 ÷ 5 = 1
Cost of the marble
= 4 u
= 4 x 1
= $4
(b)
Cost of the sticker less than the marble
= 4 u - 1 u
= 3 u
= 3 x 1
= $3
Answer(s): (a) $4; (b) $3