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  • How much Time it take for the same Work ?

    rengaraj

    rengaraj

    @rengaraj-89Rrct
    Updated: Oct 22, 2024
    Views: 927
    Sir / madam,
    My question is

    Some work is done by two people in 24 minutes. One of them can do this work alone in 40 minutes. How much time does the second person take to do the same work ?
    a. 48 Min
    b. 16 Min
    c. 72 Min
    d. 60 Min

    Advance Thanks,
    R.Rengaraj
    {SCE 31/2008/Pg 4 of 85}
    {On this forum my 8th Question.}
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Replies

  • tech_vaibhav_ee

    Member • Nov 21, 2009

    let us give a value to the total amount of work =x
    person a: 40 mins. --> x
    24 mins. --> 24x/40

    person b: y mins. -->x
    24mins -->24x/y

    when working together , they complete the whole work in 24 mins.

    therefore,
    24x/40 +24x/y = x
    y=60 mins..
    hence , person b completes the same work in 60 minutes.
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  • rengaraj

    Member • Nov 21, 2009

    Sir,
    Thanks for your answer.
    R.Rengaraj
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