Julian, Glen and Clayton collected cards in the ratio of 8 : 6 : 9. After Clayton gave ⁷₁₀ to Julian and Glen, Clayton had 490 less cards than Julian. The number of cards that Glen had increased by 30%. How many cards did Julian and Clayton have in the end?

	Julian	Glen	Clayton
Before	8 u	6 u	9 u
Change	+ 4.5 u	+ 1.8 u	- 6.3 u
After	12.5 u	7.8 u	2.7 u

Number of cards that Clayton gave to Julian and Glen
= ⁷₁₀ x 9 u
= 6.3 u

Number of cards that Glen received from Clayton
= ³⁰₁₀₀ x 6 u
= 1.8 u

Number of cards that Julian received from Clayton
= 6.3 u - 1.8 u
= 4.5 u

Number of less cards that Clayton had less than Julian
= 12.5 u - 2.7 u 
= 9.8 u

9.8 u = 490

1 u = 490 ÷ 9.8 = 50

Number of cards that Julian and Clayton had
= 12.5 u + 2.7 u
= 15.2 u
= 15.2 x 50
= 760

Answer(s): 760