Julie, Betty, Sabrina and Risa received a sum of money. Julie received ²₅ of the total amount of money Betty, Sabrina and Risa received. Betty received ¹₄ of the total amount of money Sabrina and Risa received. Sabrina received ¹₂ as much money as Risa. If Julie received $20 more than Sabrina, find the total sum of money the 4 girls received.

Julie	Betty	Sabrina	Risa	Total
2x3	5x3
	1x3	4x3
		1x4	2x4
6 u	3 u	4 u	8 u	21 u

The total amount that Sabrina and Risa have is repeated.  Make the total amount that Sabrina and Risa have the same.  LCM of 3 and 4 is 12.

The total amount that Betty, Sabrina and Risa have is repeated.  Make the total amount that Betty, Sabrina and Risa have the same. LCM of 5 and 5 is 15.

Amount that Julie had more than Sabrina
= 6 u - 4 u
= 2 u

2 u = 20

1 u = 20 ÷ 2 = 10

Total sum of money that 4 girls received
= 6 u + 3 u + 4 u + 8 u 
= 21 u
= 21 x 10
= $210

Answer(s): $210