Question

To fill a certain tank, pipes a, b and c take 20 minutes, 15 minutes and 12 minutes respectively. if the three pipes are opened every alternate minute, how long will it take to fill the tank?

Answer 1

This is ur answer hope it will help u

Answer 2

Three pipes A, B,C to fill the tank in 5 minutes.

WHAT IS Pipe and cistern?

• Cistern is a tank for storing liquids generally water and has inlet and outlet pipes to fill or empty itself.

• Pipe: Pipe is a section of a hollow cylinder for the discharge of water from one place to another.

• Pipes are generally connected to the cistern/tank for filling and emptying the cistern or tank.

According to the question:

Let the capacity of cistern be 60 units [L.C.M of 20,15 and 12].

A does = $\frac{60}{20}$ ​ =3 units / minute B does = $\frac{60}{12}$  =5 units / minute.

(A + B + C)'s per minute work = (3+4+5)units / minute=12units / minute.

Together they will fill the tank is $\frac{60}{12}$ .

= 5 minutes.

Hence, In 5 minutes three pipelines A, B, and C will fill the tank.

Learn more about pipe and cistern here, https://brainly.in/question/1601852?msp_poc_exp=6

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