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

	Pamela	Fiona	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 Pamela and Fiona 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 Pamela and Fiona at first and in the end remains the same.  Make the difference in the amounts between Pamela and Fiona at first and in the end the same. LCM of 5 and 4 is 20.

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

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

Answer(s): 68.8%