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ATQ,
Ratio of profit shares of 'X', 'Y', and 'Z' at the end of one year = (2400 × 12) : {(3600 × 4) + (3000 × 8)} : (4800 × 12)
= 28800 : (14400 + 24000) : 57600
= 28800 : 38400 : 57600
= 3 : 4 : 6
So, profit share of 'X' = 3220 × (3/13) = Rs. 744
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