Emily's and Xandra's savings were in the ratio of 4 : 9. Both of them shared the cost of their auntie's souvenir equally. Emily's remaining savings was ¹₅ as much as Xandra's savings. What percentage of her savings did Emily spend? Correct the answer to 1 decimal place.

	Emily	Xandra	Difference
Before	4x4 = 16 u	9x4 = 36 u	5x4 = 20 u
Change	- 11 u	- 11 u
After	1x5 = 5 u	5x5 = 25 u	4x5 = 20 u

Since Emily and Xandra shared the cost of their auntie's souvenir equally, the amount each paid for the souvenir is the same. 

So, the difference in the amounts between Emily and Xandra at first and in the end remains the same.  Make the difference in the amounts between Emily and Xandra at first and in the end the same. LCM of 5 and 4 is 20.

Amount that Emily spent on the souvenir
= 16 u - 5 u
= 11 u

Percentage of her savings that Emily spent
= ¹¹₁₆ x 100%
≈ 68.8%

Answer(s): 68.8%