a shopkeeper brought 100kg of one variety of wheat at the rate of rs 10.50 per kg and 50 kg of another variety at the rate of rs 9.50 per kg. he mixed the two varieties and sold the mixture at rs 14.50 per kg. find the profit per cent earned by him.
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Step-by-step explanation:
Cost of 15 kg of dal at Rs.14.50 per kg= Rs.(15×14.50)= Rs. $$217.5$$
Cost of 10 kg of dal at Rs.13 per kg= Rs. (10×13)= Rs.130
Total amount of mixture =(10+15)=25 kg
Total cost of mixture= Rs.(217.5+130)= Rs.347.5
Selling price of 1 kg of mixture= Rs.15
Selling price of 25kg of mixture=Rs.(15×25)= Rs.375
Profit=Rs.(375−347.5)= Rs.27.5
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