Multiple Choice Questions on The cost of Type 1 rice is Rs 15 per kg and Type 2 rice is Rs 20 per kg If both Type 1 and Type 2 ar........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The cost of Type 1 rice is Rs 15 per kg and Type 2 rice is Rs 20 per kg If both Type 1 and Type 2 ar...........

Quantitative Aptitude ( CCS) Mixture and Alligation
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    The cost of Type 1 rice is Rs. 15 per kg and Type 2 rice is Rs.20 per kg. If both Type 1 and Type 2 are mixed in the ratio of 2 : 3, then the price per kg of the mixed variety of rice is

    Rs. 25

    Incorrect Answer

    Rs. 30

    Incorrect Answer

    Rs. 20

    Incorrect Answer

    Rs. 18

    Correct Answer
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    Explanation:

    Let the price of the mixed variety be Rs. x per kg.

    By the rule of alligation, we have :

    Cost of 1 kg of type 1 rice           Cost of 1 kg of type 2 rice  

                   15                                                 20

                                                x

                 20-x                                               15-x

    (20-x)/(x-15) = 2/3

    60 - 3x = 2x - 30

     x = 18 rs.

    Hence, option 4 is the correct answer.
              

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