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Find the time to fill the tank!
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: Find the time to fill the tank! ( 4819 )
Find the time to fill the tank!
«
:
July 03, 2007, 08:15:54 PM From
Ria
»
Find the time to fill the tank!
First tap can fill the tank in 4 hours. Second tap can fill the tank in 2 hours. Third tap can empty the tank in 8 hours. If all the taps are operational at the same time, how long will it take to fill the tank?
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Re: Find the time to fill the tank!
«
#1 :
July 03, 2007, 08:28:38 PM From
PSM
»
1hr. 36min. or 96min. or 1.6 hrs
any thing u can take...
Re: Find the time to fill the tank!
«
#2 :
July 03, 2007, 08:37:58 PM From
Shrinidhi
»
Even I agree. 1 hour 36 minutes.
Total speed at which the tank is filling up is x/4 + x/2  x/8
where x is the volume of the water the tank can hold.
(Adding the speed which will increase the speed and subtracting which will slow down)
(Total Speed) = (Distance or Volume)/Time
Time = (Volume)/Speed
Time = x/(x/4 + x/2  x/8)
Re: Find the time to fill the tank!
«
#3 :
September 03, 2007, 02:27:20 PM From
kvk
»
1.6hrs
Re: Find the time to fill the tank!
«
#4 :
September 26, 2007, 05:05:34 PM From
vishwakarma.deepak
»
1 hour and 36 mins...
portion of tank filled in one hr = 1/4 + 1/2  1/8
= 5/8
hence time to fill tank = 8/5 hrs
Simple enough!
Deepak
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