Wendy's and Nora's savings were in the ratio of 4 : 9. Both of them shared the cost of their father's present equally. Wendy's remaining savings was
13 as much as Nora's savings. What percentage of her savings did Wendy spend? Correct the answer to 1 decimal place.
|
Wendy |
Nora |
Difference |
Before |
4x2 = 8 u |
9x2 = 18 u |
5x2 = 10 u |
Change |
- 3 u |
- 3 u |
|
After |
1x5 = 5 u |
3x5 = 15 u |
2x5 = 10 u |
Since Wendy and Nora shared the cost of their father's present equally, the amount each paid for the present is the same.
So, the difference in the amounts between Wendy and Nora at first and in the end remains the same. Make the difference in the amounts between Wendy and Nora at first and in the end the same. LCM of 5 and 2 is 10.
Amount that Wendy spent on the present
= 8 u - 5 u
= 3 u
Percentage of her savings that Wendy spent
=
38 x 100%
≈ 37.5%
Answer(s): 37.5%