Aptitude-hindi - Aptitude-Time And Works

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A can complete the work in 12 days while B can complete it in 15 days. they start the work together but A left after 4 days, in how many days the work will be complete?

  • a
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  • आपका जवाब गलत है

    A did the work for 4 days while B did the work for (4+x) days \nfraction of the work complete by A+fraction of the work complete by=1\n4/12+(x+4)/15=1\n(x+4)/15=1-4/12\nx=6\nhence,total number of days they take to complete the work =4+6=10

50 men can complete the work in how many days the work will be complete if 10 men start the work and 10 more men joined after every 10 days?

  • a
  • b
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  • आपका जवाब गलत है

    for remaining 500 man days work, there are 100 men so the number of days in which remaining work will be completed =500/100=5 days \nso, total number of days =95 days

40 men can complete one work in how many days 50 men can complete it?

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  • आपका जवाब गलत है

    here, number of man days to complete the work =40*20,i,e 800 man days\nso,if there are 50 men, they can complete the work in 800/50 i e 16 days

A is three times more efficient than B and therefore can complete one work in 60 days less than B takes. in how many days they will complete the work working together?

  • a
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  • आपका जवाब गलत है

    together A\'s and B\'s efficiency=1/30+1/90=3+1/90=22.5 days

A can complete a piece of work in 12 day and B is 60% more efficient than A. in how many days B will complete the work?

  • a
  • b
  • c
  • d
  • आपका जवाब गलत है

    A\'s efficiency or A\'s one day work=1/12\n B\'s efficiency is 60% more than A or 160/100 *1/12 =2/15 or 15/2 days=7.5 days

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