Tiffany, Zoe, Jane and Eva received a sum of money. Tiffany received ²₅ of the total amount of money Zoe, Jane and Eva received. Zoe received ¹₄ of the total amount of money Jane and Eva received. Jane received ¹₅ as much money as Eva. If Zoe received $30 less than Tiffany, find the total sum of money the 4 girls received.

Tiffany	Zoe	Jane	Eva	Total
2x3	5x3
	1x3	4x3
		1x2	5x2
6 u	3 u	2 u	10 u	21 u

The total amount that Jane and Eva have is repeated.  Make the total amount that Jane and Eva have the same.  LCM of 6 and 4 is 12.

The total amount that Zoe, Jane and Eva have is repeated.  Make the total amount that Zoe, Jane and Eva have the same. LCM of 5 and 5 is 15.

Amount that Zoe had less than Tiffany
= 6 u - 3 u
= 3 u

3 u = 30

1 u = 30 ÷ 3 = 10

Total sum of money that 4 girls received
= 6 u + 3 u + 2 u + 10 u 
= 21 u
= 21 x 10
= $210

Answer(s): $210