Flynn, George and Charles collected cards in the ratio of 7 : 5 : 6. After Charles gave ³₁₀ to Flynn and George, Charles had 124 less cards than Flynn. The number of cards that George had increased by 30%. How many cards did Flynn and Charles have in the end?

	Flynn	George	Charles
Before	7 u	5 u	6 u
Change	+ 0.3 u	+ 1.5 u	- 1.8 u
After	7.3 u	6.5 u	4.2 u

Number of cards that Charles gave to Flynn and George
= ³₁₀ x 6 u
= 1.8 u

Number of cards that George received from Charles
= ³⁰₁₀₀ x 5 u
= 1.5 u

Number of cards that Flynn received from Charles
= 1.8 u - 1.5 u
= 0.3 u

Number of less cards that Charles had less than Flynn
= 7.3 u - 4.2 u 
= 3.1 u

3.1 u = 124

1 u = 124 ÷ 3.1 = 40

Number of cards that Flynn and Charles had
= 7.3 u + 4.2 u
= 11.5 u
= 11.5 x 40
= 460

Answer(s): 460