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The cost price of three varieties of mangoes namely M, N and O is Rs. 20/kg, Rs. 40/kg and Rs. 50/kg respectively. Find the selling price of one kg of mango in which these three varieties of mangoes are mixed in the ratio of 2 : 3 : 5 such that there is a net profit of 20%?

Correct Answer: Rs. 49.2

Explanation:

Total cost of all varieties of mangoes = 20 x 2 + 40 x 3 + 50 x 5 = 40 + 120 + 250 = Rs. 410


Then, cost of 1 kg mangoes = 410/10 = Rs. 41


To get 20% profit,


The rate at which the mangoes should be sell = 120/100 x 41 = Rs. 49.2


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