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Rs 642 is divided among X, Y and Z. Y gets Rs.(Z + 90) X gets Rs. (Z + 90 + 144) = Rs. (Z + 234) According to the question, => Z + 234 + Z + 90 + Z = 642 => 3Z + 324 = 642 => Z = 318/3 => Z = 106 Share of Z = Rs 106
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