Question

if 6 oil tankers can be filled bubs pipe 9h how does long the pipe take to. fill 4 such oil tankers

Answer 1

Time taken to fill 6 oil tankers = 9 hours
Therefore Time taken to fill four oil tankers
= 9/6*4=6 hours

◀UNITARY METHOD ▶
I hope this helps you

Answer 2

Answer:

9/6×4 =6 hour..

↙️↙️ By using unitary methods ⏩▶️