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