Risa had 6 times as much money as Owen. After Risa spent
15 of her money and Owen spent
45 of his money, they had a total of $1650 left.
- How much money did Risa and Owen have altogether at first?
- Owen spent 110 of his remaining money on a blouse. What fraction of his original amount of money did he spend on the blouse?
| |
Risa |
Owen |
Total |
| Before |
6 u |
1 u |
|
| Change |
- 1.2 u |
- 0.8 u |
|
| After |
4.8 u |
0.2 u |
$1650 |
(a)
Amount that Risa spent
=
15 x 6 u
= 1.2 u
Amount that Owen spent
=
45 x 1 u
= 0.8 u
Amount that Risa and Owen spent
= 1.2 u + 0.8 u
= 5 u
5 u = 1650
1 u = 1650 ÷ 5 = 330
Amount that Risa and Owen had altogether at first
= 6 u + 1 u
= 7 u
= 7 x 330
= $2310
(b)
Amount that Owen spent on the blouse
=
110 x 0.2 u
= 0.02 u
Fraction of Owen's original amount that he spent on a blouse
=
0.021 =
0.02 x 1001 x 100=
2100=
150 Answer(s): (a) $2310; (b)
150 
