Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:
(Sun, Dec 26, 2010 11:29:29 AM)
2 pipes can fill a tank in X and Y times respectively. How to calculate the time taken to fill the tank if both the pipes a open together?
(Tue, Jan 4, 2011 10:18:14 AM)
i dont get this one.
Karan Ratnaparkhi said:
(Fri, Jan 7, 2011 01:38:58 PM)
As per the given condition we have 1/20 + 1/24 + 1/3 = 1/15. Here 1/3 refers to waste pipe nd 1/20, 1/24 refer to other 2 pipes.
(Thu, May 5, 2011 04:44:30 AM)
Two pipes can fill a tank in 20 and 24 minutes respectively and part filled by them is(1/20+1/24)
All the three pipes working together total tank fills in 15min
so 1part fills in 15min
waste pipe can empty 3 gallons per minute so the volume of tank emptying by waste pipe is total filled tank minus part filled by to pipes i.e 1/15-(1/20+1/24) x 1min= -1/40
that means in 1min waste pipe is emptying 1/40part of total tank
waste pipe can empty 3 gallons per minute
therefore total volume is 1/40=3 gallons=>120 gallons
hence capacity of tank is 120 gallons
(Sat, Jun 11, 2011 09:06:59 AM)
Thanks a lot. SRAVANREDDYPAILLA.
(Wed, Apr 11, 2012 08:09:20 PM)
How did 1/20+1/24=11/120.
Please explain it ?
(Wed, Apr 18, 2012 10:04:20 AM)
Let the capacity of tank x gallons. then in 1 minute tank filled (x/20+x/24-3)gallons
From the question we can write
15(x/20+x/24-3)=x [it took 15 min to fill x gallons]
(Thu, Feb 14, 2013 01:35:34 PM)
What is mean by galloons?
(Wed, Feb 20, 2013 01:19:53 PM)
A measure of capacity for liquids. Say water or milk can be measured on gallons.
(Sat, Apr 27, 2013 10:54:24 AM)
Let x = no.of minutes to take empty the gallon by leakage.