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Q: Water flows into a tank which is 200 m long and 150 m wide, through a pipe of cross-section (0.3m x 0.2m) at 20 km/h. In what time will the water level be 12m  ?

  • 1
    200 hrs
  • 2
    240 hrs
  • 3
    300 hrs
  • 4
    270 hrs
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Answer : 3. "300 hrs"
Explanation :

Answer: C) 300 hrs Explanation: Volume of water collected in the tank in 1 hour ⇒ (0.3 × 0.2 × 20km × 1000mts) = 1200 m cubic If after t hours, the water is at height of 12m, 1200t=200×150×12  ⇒ t = 300 Hours.

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