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Arav purchased 30 kg of wheat at the rate of Rs. 11.5 per kg and 20 kg of wheat at the rate of Rs. 14 per kg. He mixed the two and sold the mixture Approximately what price per kg should he sell the mixture to make 20% profit?

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answer is B.

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Detailed Solution

Total amount for 30 kg of wheat $= 30 \times 11.5 = 345$

$20 k g o f w h e a t a t 14 p e r k g$

$= 20 \times 14 = 280$

$\begin{array}{l} T o t a l 50 k g a m o u n t = 345 + 280 = 625 \\ o f 20 % p r o f i t w e g e t o n 625 \\ i . e = 625 + 125 = 750 \end{array}$

Per kg he sells 15 total amount $= \frac{750}{15} = 50$

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