Cathy had
23 as much money as Zara. Cathy received another $234 from her niece. In the end, Cathy's money became 2
25 of what Zara had. How much did Cathy have at first?
| |
Cathy |
Zara |
| Before |
2x5 =
10 u |
3x5 =
15 u |
| Change |
+ $234 |
|
| After |
12x3 =
36 u |
5x3 =
15 u |
2
25 =
125The amount that Zara had at first and in the end remains unchanged. Make the amount that Zara had the same. LCM of 5 and 3 is 15.
Amount that Cathy received
= 36 u - 10 u
= 26 u
26 u = 234
1 u = 234 ÷ 26 = 9
Amount that Cathy had at first
= 10 u
= 10 x 9
= $90
Answer(s): $90
