Question

Raghu's tanker can fill a cistern in 4 hours. After half the cistern is filled, three more similar tankers are opened. What is the total time taken to fill the cistern completely?

Answer 1

hey mate here is your answer
time taken to fill one tank=4hours
time to fill 3tanks =4×3=12 hours

hope it helps you
please mark as a brainliest

Answer 2

Answer:

2h 30mint

Step-by-step explanation:

Let any total work which is divisible by 4.

Let 12 total work.

Raghu take 4h to complete 12 work then efficiency is 3.

Half work done 6 (6 divided by 3) in 2 hour.

Remaining work-6

Three more similar tankers open.

3+3+3+3=12 total efficiency.

6/12=1/2h

Total Time Taken=2.5h