Monday, February 12, 2007

"MATH QUESTION OF THE DAY"

An empty swimming pool can be filled to capacity through an inlet pipe in 3 hours, and it can be completely drained by a drainpipe in 6 hours. If both pipes are fully open at the same time, in how many hours will the empty pool be filled to capacity?
  1. 4
  2. 4.5
  3. 5
  4. 5.5
  5. 6
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3 comments:

Anonymous said...

suppose the vol of the tank be V litres.

suppose the tank gets completely filled in t hrs.

according to ques,

rate at which tank is filling=V/3 litr/hr.

rate at which tank is getting empty=V/6 litr/hr.

hence,

(V/3-V/6)*t=V
=>t=6hrs.ans

February 12, 2007 at 2:03 PM
Anonymous said...

ans is E

February 12, 2007 at 9:11 PM
Unknown said...

e

February 13, 2007 at 2:37 AM

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