Question

Two pipes X and Y can fill a tank in 6 hours and 9 hours respectively. If they are turned on alternately
for one hour each starting with X, then what is the time taken to fill the tank?​

Answer 1

Answer:

7 hours

Step-by-step explanation:

Assume the total unit of tank be 18

so X fill this tank in 6 hours with 18/6=3 efficiency or 3 unit/hr

and Y fill this tank in 9 hours with 18/9=2 efficiency or 2 unit/hr

so if we start with x alternative, it could be

3+2+3+2+3+2+3 that means a total 7 hours

mark my answer as brainliest :)

Answer 2

Answer:

hope it clear!...............!!