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

	Risa	Jade	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 Risa and Jade shared the cost of their grandmother's souvenir equally, the amount each paid for the souvenir is the same. 

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

Amount that Jade spent on the souvenir
= 36 u - 25 u
= 11 u

Percentage of her savings that Jade spent
= ¹¹₃₆ x 100%
≈ 30.6%

Answer(s): 30.6%