50 kg of an alloy X contains 30% of copper by weight. pure copper is added to it to make a new alloy Y containing 65% copper by weight. what is the weight of Y obtained at the end of this process?
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X. Y
Copper=50x30X100
= 15
30% Copper = 50kg
65%... = xkg
65x50/30=108 1/3kg
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