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Rahul normally take 30 minutes to cover a particular distance. Having increased his speed by a% today, Rahul was able to cover the same distance in 10 minutes. What is the value of a?

Option 1 -

200%       

Option 2 -

100%       

Option 3 -

300%       

Option 4 -

250%

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • R

    Answered by

    Raj Pandey | Contributor-Level 9

    a month ago
    Correct Option - 1


    Detailed Solution:

    The new time is 1 3  of the old time. If time becomes 1 3 , then new speed should have been   3 1 of the initial speed. Therefore

    3 S     −     S S     ×     1 0 0     =     2 0 0 %

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