Ken had $75.70 less than Mary. He spent
27 of his money on a notebook which cost $4.80. Mary spent
25 of her money on a shirt. How much had Mary left?
| |
Ken |
Mary |
| Before |
7 u |
5 p |
| Change |
- 2 u |
- 2 p |
| After |
5 u |
3 p |
Amount that Ken spent on the notebook = 2 u
2 u = 4.80
1 u = 4.80 ÷ 2 = 2.40
Amount that Ken had at first
= 7 u
= 7 x 2.40
= $16.80
Amount that Mary had at first
= 16.80 + 75.70
= $92.50
Fraction of money that Mary had left
= 1 -
25 =
35 Amount that Mary had at first = 5 p
5 p = 92.50
1 p = 92.50 ÷ 5 = 18.50
Amount that Mary had left
= 3 p
= 3 x 18.50
= $55.50
Answer(s): $55.50
