4th Class Mental Ability Algebra Question Bank Algebra

  • question_answer
    If 10 pears cost Rs.72, then how many pears can you buy if you have Rs. 36?

    A) 3                        

    B)        4

    C) 5        

    D)        6

    E) None of these

    Correct Answer: C

    Solution :

    Explanation: Option (c) is correct. In Rs.72, the number of pears you can buy = 10 10 So, virtually in Rs. 1, the number of pears you can buy = \[\frac{10}{72}\] Therefore, in Rs. 36, the number of pears you can buy = \[\frac{10}{72}\times 36=\frac{10\times 36}{72}=10\times \frac{36}{72}\] =\[10\times \left( \frac{36\div 36}{72\div 36} \right)=10\times \frac{1}{2}=\frac{10}{2}=5\] Rest of the options is incorrect because of the correctness of option (c).                


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