Kimberly, Jaslyn and Marion bought a present for their uncle. They shared the cost equally between them. Kimberly used ⁴₅ of her savings, Jaslyn used ³₈ of her savings and Marion used ¹₄ of her savings. Kimberly and Marion had $390 left. How much did each girl pay for the present?
The amount spent by each girl is the same.  Make the numerators the same.
LCM of 4, 3 and 1 = 12

4x35x3 of Kimberly's savings = 3x48x4 of Jaslyn's savings = 1x124x12 of Marion savings
1215 of Kimberly's savings = 1232 of Jaslyn's savings = 1248 of Marion's savings

	Kimberly	Jaslyn	Marion
Before	15 u	32 u	48 u
Change	- 12 u	- 12 u	- 12 u
After	3 u	20 u	36 u

Savings that Kimberly had left
= 15 u - 12 u
= 3 u

Savings that Marion had left
= 48 u - 12 u
= 36 u

Total savings that Kimberly and Marion had left
= 3 u + 36 u
= 39 u

39 u = 390

1 u = 390 ÷ 39 = 10

Amount that each girl paid
= 12 u
= 12 x 10
= $120

Answer(s): $120