Elijah, Harry and Clint collected marbles in the ratio of 9 : 4 : 9. After Clint gave ⁷₁₀ to Elijah and Harry, Clint had 590 less marbles than Elijah. The number of marbles that Harry had increased by 20%. How many marbles did Elijah and Clint have in the end?

	Elijah	Harry	Clint
Before	9 u	4 u	9 u
Change	+ 5.5 u	+ 0.8 u	- 6.3 u
After	14.5 u	4.8 u	2.7 u

Number of marbles that Clint gave to Elijah and Harry
= ⁷₁₀ x 9 u
= 6.3 u

Number of marbles that Harry received from Clint
= ²⁰₁₀₀ x 4 u
= 0.8 u

Number of marbles that Elijah received from Clint
= 6.3 u - 0.8 u
= 5.5 u

Number of less marbles that Clint had less than Elijah
= 14.5 u - 2.7 u 
= 11.8 u

11.8 u = 590

1 u = 590 ÷ 11.8 = 50

Number of marbles that Elijah and Clint had
= 14.5 u + 2.7 u
= 17.2 u
= 17.2 x 50
= 860

Answer(s): 860