Adam spends $8 for 1 sticker and 1 marble.
The cost of 1 sticker is
35 the cost of 1 marble.
- How much is the marble?
- How much is the sticker less than the marble?
(a)
Cost of the sticker = 3 u
Cost of the marble = 5 u
Total cost of the sticker and the marble
= 3 u + 5 u
= 8 u
8 u = 8
1 u = 8 ÷ 8 = 1
Cost of the marble
= 5 u
= 5 x 1
= $5
(b)
Cost of the sticker less than the marble
= 5 u - 3 u
= 2 u
= 2 x 1
= $2
Answer(s): (a) $5; (b) $2