Question

If 10 pumps can fill a tank in 9 minutes, how many pumps will fill the tank in 6 minutes? please with formula I will make you the brainliest

Answer 1

Time taken by 4 such pumps to empty the tank = 42 minutes

Step-by-step explanation:

Time taken by 6 pumps to empty a tank = 28 minutes.

We need to find time taken by 4 such pumps to empty the tank.

Let the time taken by 4 pumps to empty the tank be x

Pumps      Time Taken

6                    28

4                     x

As the number of pumps are decreasing so the time taken will also increase. Therefore, It is an inverse variation.

⇒ 4 × x = 6 × 28

⇒ 4·x = 168

⇒ x = 42

Therefore, Time taken by 4 such pumps to empty the tank = 42 minutes

Answer 2

Answer:

Step-by-step explanation:

In 1 minute by 10 pump = volume/9

In 1 minute by 1 pump = volume / (9*10)

So , in 1 minute by 6 minute = volume / 15

So answer is "15"