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नवीनतमलोकप्रियमूल्यांकनपेज देखें 19 of 493कुल सवाल 3944 जॉइन Examsbook

प्र: Amit can do a piece of work in 45 days, but Bharath can do the same work in 5 days less, than Amit, when  working alone. Amit and Bharath both started the work together but Bharath  left after some days and Amit finished the remaining work in 56 days with half of his efficiency but he did the work with Bharath with his complete efficiency. For how many days they had worked together? 4500 0

  • 1
    6
    सही
    गलत
  • 2
    8
    सही
    गलत
  • 3
    9
    सही
    गलत
  • 4
    12
    सही
    गलत
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उत्तर : 2. "8"
व्याख्या :

Answer: B) 8 Explanation:     AmitBharatNo.of Days4540Efficiency2.22Percent(=145)2.5 Percent(=140)   Amit did the work in 56 days = 56×145×2=2845    Therefore, Rest work 17/45 was done by Amit and Bharath = 174517360 = 8 days       ( since Amit and Bharath  do the work in one day = 145+140=17360)

प्र: A can do a piece of work in 10 days, B in 15 days. They work together for 5 days, the rest of the work is finished by C in two more days. If they get Rs. 3000 as wages for the whole work, what are the daily wages of A, B and C respectively (in Rs): 2279 0

  • 1
    200, 250, 300
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    गलत
  • 2
    300, 200, 250
    सही
    गलत
  • 3
    200, 300, 400
    सही
    गलत
  • 4
    None of these
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उत्तर : 2. "300, 200, 250"
व्याख्या :

Answer: B) 300, 200, 250 Explanation: A's 5 days work = 50%   B's 5 days work = 33.33%  C's 2 days work = 16.66%     [100- (50+33.33)]  Ratio of contribution of work of A, B and C = 50 : 3313 : 1623 = 3 : 2 : 1    A's total share = Rs. 1500  B's total share = Rs. 1000  C's total share = Rs. 500     A's one day's earning = Rs.300   B's one day's earning = Rs.200   C's one day's earning = Rs.250

प्र: Two pipes A and B can fill a tank in 24 hours and 1717 hours respectively. Harihar opened the pipes A and B to fill an empty tank and some times later he closed the taps A and B , when the tank was supposed to be full. After that it was found that the tank was emptied in 2.5 hours because an outlet pipe "C" connected to the tank was open from the beginning. If Harihar closed the pipe C instead of closing pipes A and B the remaining tank would have been filled in : 10141 0

  • 1
    2 hours
    सही
    गलत
  • 2
    8 hours
    सही
    गलत
  • 3
    6 hours
    सही
    गलत
  • 4
    4 hours
    सही
    गलत
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उत्तर : 2. "8 hours"
व्याख्या :

Answer: B) 8 hours Explanation: Efficiency of Inlet pipe A = 4.16%       10024    Efficiency of Inlet pipe B = 5.83%      1001717     Therefore, Efficiency of A and B together = 100 %      Now, if the efficiency of outlet pipe be x% then in 10 hours the capacity of tank which will be filled = 10 *  (10 - x)   Now, since this amount of water is being emptied by 'C' at x% per hour, then    10x10-xx=2.5 hrs   => x = 8    Therefore, in 10 hours 20% tank is filled only. Hence, the remaining 80% of the  capacity will be filled by pipes A and B  in 80/10 = 8 hours

प्र: What should come next in the following letter sequence? A A B A B C A B C D A B C D E A B C D 5490 0

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    A
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  • 2
    E
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    C
    सही
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  • 4
    B
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उत्तर : 2. "E"
व्याख्या :

Answer: B) E Explanation:

प्र: The ratio of earnings of A and B is 4:5. If the earnings of A increase by 20% and the earnings of B decrease by 20%, the new ratio of their earnings becomes 6:5. What are A's earnings? 1899 0

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    Rs.22,000
    सही
    गलत
  • 2
    Rs.27,500
    सही
    गलत
  • 3
    Rs. 26,400
    सही
    गलत
  • 4
    Cannot be determined
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उत्तर : 4. "Cannot be determined"
व्याख्या :

Answer: D) Cannot be determined Explanation:

प्र: Which of the following organisations has taken the responsibility to raise about US $ 2 billion to build a rail link from china to Singapore connecting eight nations? 1746 0

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    ASEAN
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    SAARC
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    EU
    सही
    गलत
  • 4
    NATO
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उत्तर : 1. "ASEAN"
व्याख्या :

Answer: A) ASEAN Explanation:

प्र: One of the main issues discussed in the 40th Ministrial Meeting of the ASEAN held in August, 2007 was 1614 0

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    America's overstay in Iraq
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    गलत
  • 2
    Presidential Election in Pakistan
    सही
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  • 3
    Draft blueprint of the ASEAN Charter
    सही
    गलत
  • 4
    The 123 Agreement between India and USA
    सही
    गलत
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उत्तर : 3. "Draft blueprint of the ASEAN Charter"
व्याख्या :

Answer: C) Draft blueprint of the ASEAN Charter Explanation:

प्र: The Asia-Pacific Economic Cooperation meeting was organised in September 2007 in which of the following places? 1314 1

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    Sydney
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    New York
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    Tokyo
    सही
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  • 4
    Beijing
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उत्तर : 1. "Sydney"
व्याख्या :

Answer: A) Sydney Explanation:

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