Question
Luis, Zeph and Cole have some cards. The ratios of their cards are as follows:

Luis : (Luis + Zeph + Cole) = 3 : 7
Zeph : (Luis + Cole) = 1 : 3

Cole has 10 cards more than Zeph. In the end, Cole gives away all he has to Zeph and Luis so that both Zeph and Luis end up with the same number of cards, how many cards has Luis received from Cole?
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Luis, Zeph and Cole have some cards. The ratios of their cards are as follows:

Luis : (Luis + Zeph + Cole) = 3 : 7
Zeph : (Luis + Cole) = 1 : 3

Cole has 10 cards more than Zeph. In the end, Cole gives away all he has to Zeph and Luis so that both Zeph and Luis end up with the same number of cards, how many cards has Luis received from Cole?