Multiple Choice Questions on In a hostel the rent per room is increased by 20 If number of rooms in the hostel is also increased ........... for CDS Exam Preparation

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Multiple Choice Questions

In a hostel the rent per room is increased by 20 If number of rooms in the hostel is also increased ...........

Quantitative Aptitude (CDS) Percentage
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    In a hostel the rent per room is increased by 20%. If number of rooms in the hostel is also increased by 20% and the hostel is always full, then what is the percentage change in the total collection at the cash counter?

     

    30%

    Incorrect Answer

    40%

    Incorrect Answer

    44%

    Correct Answer

    48%

    Incorrect Answer
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    Explanation:

    Let initial rent be rs 10

    And initial rooms be 10

    So initial collection = 10*10 = Rs 100

    Now new rent = 10 + 20% of 10 = 12

    New no of rooms = 10 + 20% of 10 = 12

    So new collection = 12*12 = 144 % change in collection = (144-100)/100*100 = 44%

    By: Munesh Kumari
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