The cost of 5kg of rice is equal to 17 kg of potatoes. Cost of 7 kg of rice is Rs.476. What will be the cost of 3 kg of rice and 5 kg of potatoes together? Choose the correct choice from the following options
A) Rs.302 B) Rs.312 C) Rs.328 D) Rs.304 E) Rs.308
Explanation:   Price of 1 kg of rice = 476/7 = Rs.68.   Price of 5 kg of rice = Rs.68 x 5 = Rs.340.   Cost of 17 kg potatoes = Rs.340.   :. Cost of 1 kg potato = Rs.340/17 = Rs.20.   :. Cost of 3 kg rice + 5 kg potato = 3 x 68 + 5 x 20 = Rs.304.   Answer: Option Rs.304
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The cost of 5kg of rice is equal to 17 kg of potatoes. Cost of 7 kg of rice is Rs.476. What will be the cost of 3 kg of rice and 5 kg of potatoes together?