Marion, Eva and Jade had a sum of money. The amount of money Marion had was ³₄ of the amount of money Eva had. The ratio of the amount of money Eva had to the total amount of money Jade and Eva had was 3: 7. After Jade gave $10 to Eva, she had as much money as Eva. How much more money did Jade have than Marion in the end?

Marion	Eva	Jade
3x3 = 9 u	4x3 = 12 u
	3x4 = 12 u	4x4 = 16 u
9 u	12 u	16 u

The amount that Eva had is the repeated identity. Make the amount that Eva had the same.  LCM of 4 and 3 is 12.

	Marion	Eva	Jade
Before	9 u	12 u	16 u
Change	No change	+ 10	- 10
After	9 u	12 u + 10	16 u - 10

The amount that Jade and Eva had in the end is the same.

16 u - 10 = 12 u + 10
16 u - 12 u = 10 + 10 
4 u = 20

1 u = 20 ÷ 4 = 5

Amount that Jade had more than Marion in the end
= 16 u - 10 - 9 u
= 7 u - 10
= 7 x 5 - 10
= 35 - 10
= $25

Answer(s): $25