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Into 50 kg of water initially at a temperature of 15C, 2 kg of ice at...

Into 50 kg of water initially at a temperature of 15C, 2 kg of ice at -5C and 5kg of copper at 175C are added. The final temperature of mixture is ?

a) 13.071C

b) 15.252C

c) 22.135C

d) 25.222C

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