sonu buy 40 kg of wheat at rs 12.50 per kg and 30 kg of wheat at rs 14 per kg at what rate per kg should he sell the mixture to gain 5% on the whole
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cost of 40 kg=₹500
cost of 30kg=₹420
total cost=₹920
selling price of 70 kg =cp×(100+profit%)÷100
sp=₹966
profit=sp-cp
p=966-920
p=₹46
he should sell 1 kg wheat at= 70÷46+1
cost of 30kg=₹420
total cost=₹920
selling price of 70 kg =cp×(100+profit%)÷100
sp=₹966
profit=sp-cp
p=966-920
p=₹46
he should sell 1 kg wheat at= 70÷46+1
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