Practice Test Discussion

Q)

'X' is 3 times as fast as 'Y' and is able to complete the work in 40 days less than 'Y'. Then, the time in which they can complete the work together, is

    • Explanation

    We shall use the formula, klk2-1

    [Here, k= number of times, l=given days]

    Given, k=3, l=40

     =3×4032-1=3×408=15 days

     Hence option A is the correct.

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