Cindy's and Xandra's savings were in the ratio of 4 : 9. Both of them shared the cost of their younger brother's gift equally. Cindy's remaining savings was ²₅ as much as Xandra's savings. What percentage of her savings did Xandra spend? Correct the answer to 1 decimal place.

	Cindy	Xandra	Difference
Before	4x3 = 12 u	9x3 = 27 u	5x3 = 15 u
Change	- 2 u	- 2 u
After	2x5 = 10 u	5x5 = 25 u	3x5 = 15 u

Since Cindy and Xandra shared the cost of their younger brother's gift equally, the amount each paid for the gift is the same. 

So, the difference in the amounts between Cindy and Xandra at first and in the end remains the same.  Make the difference in the amounts between Cindy and Xandra at first and in the end the same. LCM of 5 and 3 is 15.

Amount that Xandra spent on the gift
= 27 u - 25 u
= 2 u

Percentage of her savings that Xandra spent
= ²₂₇ x 100%
≈ 7.4%

Answer(s): 7.4%