00:01
Three inlet pipes a, b, c can be used to fill a 1000 cubic feet water storage tank.
00:09
When three pipes are in operation, the tank can be filled in 10 hours, which would mean all the three pipes a plus b plus c would fill the entire tank in 10 hours, which would mean a plus b plus c in one hour would essentially fill 1 by 10 parts.
00:43
So a, b in one hour will fill 1 by 20 parts of the tank.
00:57
That's what it says, because a plus b is 20, increases to.
01:02
So if you reduce the number of combinations, you will see that the value is decreasing because lesser number of pipes are being employed.
01:15
Therefore, if you just use c rather than using a and b, you would see that it will be 1 by 10 minus 1 by 20, which would be again 1 by 20.
01:31
So this is how c will fill.
01:34
So therefore it says c will fill the tank within 20 hours.
01:47
So that's the individual contribution.
01:56
When a and c are used in one hour, the total parts will be filled by 12 .5, because that's what is given...