Question

a pump can empty a tank of capacity 300 litres in 40 min how long will the pump take to empty 240 litres of water from the tank​

Answer 1

EXPLANATION:-

300 litres can be emptied in =40 mins

240 litres can be emptied in =?

We can simply use ratio and proportion..

300:40::240:x

product of means=product of extremes

300×x=40×240

300x=9600

x=9600/300

x=32(ANS)

THUS,IT CAN EMPTY 240 LITRES IN 32 MINUTES.....

Answer 2

Answer:

Step-by-step explanation:

This question can be easily solved by using the concept of "unitary method."

Here we need to find something on 1 thing first, and then by using this data we can find other things given in the question.

It is given that 300 litres of water can be emptied from a tank in 40 minutes.

So, 240 litres of water can be emptied from a tank in →$(\frac{40}{300} *240)$ minutes.

$\huge{\boxed{\bigstar\:{\underline{\bold{32\: minutes.}}}}}$

So, this is how we solve a problem based on the concept of unitary method.