A man buys 20 kg of apples at 60 per kg and 30 kg of apples at 70 per kg.At what rate per kg should he sell them to gain 25%?
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Answer:
20 kg apples × RS 60 per kg = RS.1200
30 kg apples × RS 70 per kg = RS.2100
Total kg=20kg+40kg= 50 kg
Total purchase = RS.1200+RS.2100= RS.3300
Price per kg for 50kg apples= Rs3300÷50kg
Price per kg for 50kg apples=Rs66
25% of RS 66 = 66×25/100
= 66×0.25
=16.50
Now, To gain 25% profit we have to add 25% in per kg of purchase price = RS. 66.00 + RS 16.50
= RS.82.50
Answer; To gain 25% profit, he should sell the apples for RS.82.50 per kg
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