Irene had $230 more than Kylie. Irene spent
25 of her money and Kylie spent
45 of her money. In the end, Irene had 4 times as much as Kylie. Find the amount of money Kylie had at first.
| |
Irene |
Kylie |
Comparing Irene
and Kylie at first |
$230 more |
|
| Before |
5x4 =
20 u |
5x3 =
15 u |
| Change |
- 2x4 =
- 8 u |
- 4x3 =
- 12 u |
| After |
3x4 =
12 u |
1x3 =
3 u |
Comparing Irene
and Kylie in the end |
4x3 =
12 u |
1x3 =
3 u |
The amount that Irene had in the end is repeated. Make the amount that Irene had in the end the same. LCM of 4 and 3 is 12.
Amount that Irene had more than Kylie
= 20 u - 15 u
= 5 u
5 u = 230
1 u = 230 ÷ 5 = 46
Amount that Kylie had at first
= 15 u
= 15 x 46
= $690
Answer(s): $690
