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Question

A trader mixes three varieties of groundnuts costing Rs 50, Rs 20 and Rs 30 per kg in the ratio 2 : 4 : 3 in terms of weight and sells the mixture at Rs 33 per kg What percentage of profit does he make?


A
8%
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B
9%
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C
10%
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D
None of these
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Solution

The correct option is C 10%
Rs. 50,Rs. 20, Rs.30 per Kg in ratio 2:4:3
Then the cost of 1 Kg mixture=$$\frac{50\times 2+20\times 4+30\times 3}{2+4+3}$$
$$\Rightarrow \frac{270}{9}=30  Rs.$$
S.P.=33 Rs.
$$Profit=33-30=3  Rs.$$
Profit percentage=$$\frac{3}{30}\times 100=10$$%

Mathematics

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