Ken had $65.70 less than Mary. He spent
56 of his money on a pen which cost $9.50. Mary spent
13 of her money on a jacket. How much had Mary left?
| |
Ken |
Mary |
| Before |
6 u |
3 p |
| Change |
- 5 u |
- 1 p |
| After |
1 u |
2 p |
Amount that Ken spent on the pen = 5 u
5 u = 9.50
1 u = 9.50 ÷ 5 = 1.90
Amount that Ken had at first
= 6 u
= 6 x 1.90
= $11.40
Amount that Mary had at first
= 11.40 + 65.70
= $77.10
Fraction of money that Mary had left
= 1 -
13 =
23 Amount that Mary had at first = 3 p
3 p = 77.10
1 p = 77.10 ÷ 3 = 25.70
Amount that Mary had left
= 2 p
= 2 x 25.70
= $51.40
Answer(s): $51.40
