[Aptitude] Archive of All Aptitude articles written by Mrunal

137 comments to [Aptitude] Archive of All Aptitude articles written by Mrunal

• Utkarsh Aeron

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  4 men and 10 women were put on a work. They completed 1/3 of work in 4 days. After this 2 men and 2 women were increased. They completed 2/9 more of the work in 2 days. If the remaining work is to be completed in 3 days, then how many of the more women must be increased ?

  sir tried a lot with std formula cant get the solution…plz help

  • Deepak

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    @Utkarsh

    Let a single man do M amount of work, and a single woman W amount of work in one day.

    In these fraction questions, its advisable to take total work as LCM of denominators, but if its too small it is upto you to decide what would be an ideal value for total work to avoid complex calculations. I took W=36, you can take this value to be anything.

    In 4 days, 4 Men and 10 Women did 1/3 work. We can write the equation for this.

    4(4M+10W)=12 (1/3 of 36 is 12)

    After 2 Men and 2 Women joined, 2/9 of work was done. So now Men become 6, and Women 12. Equation becomes

    2(6M+12W)=8 (2/9 of 36 is 8)

    On solving we get, M = 1/3 and W=1/6

    Now, its asked how many Women should join so that remaining work gets completed in 3 days. Let joining Women be Z. Then equation becomes

    3(6M+(12+Z)W)=16 (Remaining Work is 36-12-8=16)

    Substituting the values of M and W,

    3(6(1/3) + (12+Z)(1/6))=16

    On solving this we get the value of Z to be 8.

    Hence, answer is 8.

    Cheers :)

• mukul

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  for hindi medium please suggest me ssc cgl strategy

• BISWA

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  Mrunal Sir for cabinet secretariat DFO(GD) exam in aptitude section are geometry , mensuration, trignometry important or not please answer it sir…..it’s urjent

• akumar

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  sir
  plz plz
  explain the exam stragedy for RBI ASSISTANCE EXAM ,how to prepare
  waiting for your advice

  thx!

• dolly

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  sir
  plz
  tell us hw to prepare for rbi assistant exam

• manish

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  sir, first time i am blogging your site. I didn’t try yet your suggestion but it seems effective. I am preparing for SAIL management trainee(Computer Science). I am humbly requesting you to give suggestion for that exam too.
  I will eagerly wait for your response. Thank you..

• prakash

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  what annual paymentwill discharge adebt of rs 770 due in 5 years, the rate of interest being 5% per annum?
  mrunal ji please explain this sum.