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Home Aptitude Work and Wages See What Others Are Saying!
  • Question
  • Total wages for a work is ? 1280. A alone can do a piece of work in 8 days, while B alone can do it in 12 days. If A and B work on alternate days, then find the share of A.


  • Options
  • A. ? 800
  • B. ? 500
  • C. ? 600
  • D. ? 700

  • Correct Answer
  • ? 800 

    Explanation

    Work for 1 st 2 days = (1/8) + (1/12) = 5/24
    ? Work for 8 days = (5/24) x (8/2) = 5/6
    ? Remaining work = 1- (5/6) = (6 - 5) / 6 = 1/6
    On 9th day, A's work = 1/8

    Remaining work after 9 days = (1/6) - (1/8) = (4 - 3) / 24 = 1/24
    B will finish this work in (12 x 1)/24 = 1/2 day
    Clearly, A worked for 5 days from starting.

    ? Work done by A in 5 days = (1/8) x 5 = 5/8
    ? A's share = (5/8) x 1280 = 5 x 160 = ? 800


  • More questions

    • 1. 
      Five coins are tossed at a time. Then, the probability of obtaining at least one tail is

    • Options
    • A. 31/32
    • B. 1/32
    • C. 1/5
    • D. 5/32
    • Discuss
    • 2. 
      Find the maximum number of tree which can plant 20 m apart on the two side of straight road 1760 m long

    • Options
    • A. 174
    • B. 176
    • C. 180
    • D. 178
    • Discuss
    • 3. 
      1307 x 1307 =?

    • Options
    • A. 1601249
    • B. 1607249
    • C. 1701249
    • D. 1708249
    • Discuss
    • 4. 
      The circumferences of two concentric are 176 m and 132 m respectively. what is the difference between their radii?

    • Options
    • A. 5 meter
    • B. 7 meter
    • C. 8 meter
    • D. 44 meter
    • Discuss
    • 5. 
      (1/2 ÷ 4 + 20) / (1/2 x 4 + 20) =?

    • Options
    • A. 81 / 88
    • B. 23/11
    • C. 161 / 176
    • D. 1
    • Discuss
    • 6. 
      Find the cardinal number of the following set {x: x = 2n, n ? N, 4 ? x ? 11}

    • Options
    • A. 8
    • B. 6
    • C. 12
    • D. 4
    • Discuss
    • 7. 
      If a fraction is multiplied by itself and then divided by the reciprocal of the same fraction, the result is 18 26/ 27. Find the fraction.

    • Options
    • A. 8/27
    • B. 11/3
    • C. 22/3
    • D. 32/3
    • Discuss
    • 8. 
      (0.04) 3 =?

    • Options
    • A. 0.064
    • B. 0.0064
    • C. 0.00064
    • D. 0.000064
    • Discuss
    • 9. 
      If a + b + c = 8, then the value of (a ? 4)3 + (b ? 3)3 + (c ? 1)3 ? 3 (a ? 4) (b ? 3) (c ? 1) is

    • Options
    • A. 2
    • B. 4
    • C. 1
    • D. 0
    • Discuss
    • 10. 
      3571 +? - 6086 = 155

    • Options
    • A. 2400
    • B. 2630
    • C. 2515
    • D. None of these
    • Discuss


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