(C) Efficiency of pipe $A = 1/6$ tank per hour.Efficiency of pipe $B = 1/8$ tank per hour.Combined efficiency of pipe $A$ and $B = (1/6 + 1/8) = (4+3)

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(C) Efficiency of pipe $A = 1/6$ tank per hour.Efficiency of pipe $B = 1/8$ tank per hour.Combined efficiency of pipe $A$ and $B = (1/6 + 1/8) = (4+3)/24 = 7/24$ tank per hour.In $2$ hours,the work done by both pipes $= 2 \times (7/24) = 7/12$ tank.Remaining tank to be filled $= 1 - 7/12 = 5/12$ tank.Pipe $B$ fills $1/8$ tank in $1$ hour.Time taken by pipe $B$ to fill $5/12$ tank $= (5/12) / (1/8) = (5/12) \times 8 = 40/12 = 10/3 = 3 \frac{1}{3}$ hours.

Competitive Quantitative Aptitude Pipes and Cistern Pipes and Cistern

Medium

Pipe $A$ can fill an empty tank in $6$ $hours$ and pipe $B$ in $8$ $hours$. If both the pipes are opened and after $2$ $hours$ pipe $A$ is closed,how much time will pipe $B$ take to fill the remaining tank?

A
$2 \frac{1}{3}$
B
$7 \frac{1}{2}$
C
$3 \frac{1}{3}$
D
$2 \frac{2}{5}$

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Pipes and Cistern

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Pipes and Cistern

Pipe $X$ can fill a tank in $20$ $hours$ and pipe $Y$ can fill the tank in $35$ $hours.$ Both the pipes are opened on alternate hours. Pipe $Y$ is opened first,then in how much time (in hours) will the tank be full?

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Pipe $A$ can fill a tank in $30$ minutes,while pipe $B$ can fill the same tank in $10$ minutes and pipe $C$ can empty the full tank in $40$ minutes. If all the pipes are opened together,how much time will be needed to make the tank full?

Medium

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An inlet pipe fills $\frac{1}{8}$ part of a tank in $1 \ h$. How much time (in $h$) will the pipe take to fill the empty tank?

Easy

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$A$ cistern can be filled by two pipes $A$ and $B$ in $4$ $hours$ and $6$ $hours$ respectively. When full,the tank can be emptied by a third pipe in $8$ $hours$. If all the taps are turned on at the same time,the cistern will be full in?

Easy

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Three pipes $A, B$ and $C$ can fill a cistern in $6$ $hrs$. After working together for $2$ $hrs$,$C$ is closed and $A$ and $B$ fill the remaining part of the cistern in $8$ $hrs$. Find the time (in $hrs$) in which the cistern can be filled by pipe $C$ alone.

Medium

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Pipe $A$ can fill an empty tank in $6$ $hours$ and pipe $B$ in $8$ $hours$. If both the pipes are opened and after $2$ $hours$ pipe $A$ is closed,how much time will pipe $B$ take to fill the remaining tank?

Similar Questions

Pipe $X$ can fill a tank in $20$ $hours$ and pipe $Y$ can fill the tank in $35$ $hours.$ Both the pipes are opened on alternate hours. Pipe $Y$ is opened first,then in how much time (in hours) will the tank be full?

Pipe $A$ can fill a tank in $30$ minutes,while pipe $B$ can fill the same tank in $10$ minutes and pipe $C$ can empty the full tank in $40$ minutes. If all the pipes are opened together,how much time will be needed to make the tank full?

An inlet pipe fills $\frac{1}{8}$ part of a tank in $1 \ h$. How much time (in $h$) will the pipe take to fill the empty tank?

$A$ cistern can be filled by two pipes $A$ and $B$ in $4$ $hours$ and $6$ $hours$ respectively. When full,the tank can be emptied by a third pipe in $8$ $hours$. If all the taps are turned on at the same time,the cistern will be full in?

Three pipes $A, B$ and $C$ can fill a cistern in $6$ $hrs$. After working together for $2$ $hrs$,$C$ is closed and $A$ and $B$ fill the remaining part of the cistern in $8$ $hrs$. Find the time (in $hrs$) in which the cistern can be filled by pipe $C$ alone.

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