A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 2 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 8 hours.
What fraction of the tank (initially empty) will be filled in 1.38 hours if all three pipes are in operation? Give your answer to two decimal places.
2006-07-21 22:26:24 · 11 answers · asked by Omar 1 in Science & Mathematics ➔ Mathematics
I think 3/4 will be filled.
2006-07-21 22:39:45 · answer #1 · answered by Sherlock Holmes 6 · 0⤊ 0⤋
The large inlet pipe will fill 1.38/2 of the tank in 1.38 hours.
The small inlet pipe will fill 1.38/6 of the tank in 1.38 hours.
The outlet pipe will empty 1.38/8 of the tank in 1.38 hours.
Thus, the remaining amount will be:
1.38/2 + 1.38/6 - 1.38/8 = 0.7475
Thus, only 0.75 of the tank is filled, or to be more specific, only 74.75% of the tank is filled.
2006-07-22 05:37:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
In one hour the tank fills=(1/2)+(1/6)-(1/8)=13/24
So in 1.38 hrs tank fills =1.38*13/24=0.7475, approx (3/4).
2006-07-22 06:21:32 · answer #3 · answered by adi4 1 · 0⤊ 0⤋
The answer is 1.38(1/2+1/6-1/8)=0.7475. upto second decimal it is 0.75. that is 75% or 2/3rd.
2006-07-22 06:51:18 · answer #4 · answered by sharanan 2 · 0⤊ 0⤋
1262
2006-07-22 05:33:57 · answer #5 · answered by truth speaker 2 · 0⤊ 0⤋
That's a good one.
Half full [.00]
Wait. It's 100.00%
My maths isn't what it used to be but it's an excellent puzzle for making you think.
2006-07-22 05:40:44 · answer #6 · answered by Neil S 4 · 0⤊ 0⤋
it will till i"ll solve it.let it fill on its own.or u want me to do ur homework
2006-07-22 07:28:16 · answer #7 · answered by nikki 4 · 0⤊ 0⤋
i guess u go to some tutor n get it solved.
2006-07-22 12:51:41 · answer #8 · answered by Anonymous · 0⤊ 0⤋
maths professor
2006-07-22 05:29:59 · answer #9 · answered by WOLVERINE 4 · 0⤊ 0⤋
it will not be fill
2006-07-22 05:31:42 · answer #10 · answered by uncle podger 3 · 0⤊ 0⤋