Adam spends $7 for 1 marble and 1 sticker.
The cost of 1 marble is
16 the cost of 1 sticker.
- How much is the sticker?
- How much is the marble less than the sticker?
(a)
Cost of the marble = 1 u
Cost of the sticker = 6 u
Total cost of the marble and the sticker
= 1 u + 6 u
= 7 u
7 u = 7
1 u = 7 ÷ 7 = 1
Cost of the sticker
= 6 u
= 6 x 1
= $6
(b)
Cost of the marble less than the sticker
= 6 u - 1 u
= 5 u
= 5 x 1
= $5
Answer(s): (a) $6; (b) $5