How Much More Time is Fill The Water Tank Completely?

If 2/5 portion of a water tank is filled up in 2 minutes, then how much more time is required to fill the water tank completely?

  1. 12 minutes
  2. 3 minutes
  3. 6 minutes
  4. 15 minutes
Anurag Mishra Professor Asked on 7th September 2015 in Maths.
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1 Answer(s)

Answer: (2) 3 minutes

Explanation:-
Let the time by a tap to fill the tank = X min.
If 2/3 portion of a water tank is filled up in 2 minutes,
Then,  X x 2/5 = 2
2 X = 2 x 5
X = 2 x 5/2
X = 5

Then, total time taken by a tap to fill the tank = 5
Then, the more time = 5- 2 = 3 min

Hence, the answer is (2) 3 minutes.

Anurag Mishra Professor Answered on 9th September 2015.
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