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  • Question
  • The average age of 5 member of a committee is the same is it was 3 years ago ,because an old member has been replaced by a new member . the difference between the age of old and new member is?


  • Options
  • A. 2 years
  • B. 4 years
  • C. 8 years
  • D. 15 years

  • Correct Answer
  • 15 years 

    Explanation

    Increase in sum of age during 3 years = 3 x 5 years
    = 15 years
    So , the difference between ages of old and new member is 15 years


  • More questions

    • 1. 
      The product of two consecutive odd number is 6723. What is the greater number?

    • Options
    • A. 89
    • B. 85
    • C. 91
    • D. 83
    • Discuss
    • 2. 
      Average value of property of three persons A, B, C is ? 11111 crore. The property of C is as less as the property of A is greater than the average property of both C and A. The value of property of B is.

    • Options
    • A. 110 crore
    • B. 11211 crore
    • C. 11111 crore
    • D. 21410 crore
    • Discuss
    • 3. 
      The number of digits in the numeral for 2 64?

    • Options
    • A. 18 digit
    • B. 19 digit
    • C. 20 digit
    • D. 21digit
    • Discuss
    • 4. 
      36800 - 9999 - 3333 - 66 =?

    • Options
    • A. 30200
    • B. 27912
    • C. 23402
    • D. 24102
    • Discuss
    • 5. An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon?

    • Options
    • A. 144°
    • B. 150°
    • C. 168°
    • D. 180°
    • Discuss
    • 6. 
      A train travels 100 meters at 70 km hour. A man is running at 10 km per hour in the same direction. What time the train will pass the man?

    • Options
    • A. 6 seconds
    • B. 62/3 seconds
    • C. 7 second
    • D. 8 second
    • Discuss
    • 7. 8 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of water is 16 : 65. How much wine did the cask hold originally?

    • Options
    • A. 18 litres
    • B. 24 litres
    • C. 32 litres
    • D. 42 litres
    • Discuss
    • 8. 
      What percent of 7.2 kg is 18 gms?

    • Options
    • A. .025%
    • B. .25%
    • C. 2.5%
    • D. 25%
    • Discuss
    • 9. 
      Find the cube root of 19683.

    • Options
    • A. 25
    • B. 26
    • C. 28
    • D. 27
    • Discuss
    • 10. 
      A cost of cultivating a square field at a rate of ? 135 per hectare is ? 1215. The cost of putting a fence around it at the rate of 75 paise per meter wouldbe

    • Options
    • A. ? 360
    • B. ? 810
    • C. ? 900
    • D. ? 1800
    • Discuss


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