Tap A and B can fill a tank in 8 and 13 hours respectively Tap A fill the tank up to 1 3 and remaini...........

Quantitative Aptitude (CDS) Pipes&cistern

Tap A and B can fill a tank in 8 and 13 hours respectively. Tap A fill the tank up to 1/3 and remaining was filled by B.Find the total time taken to fill the tank?

34/3 hr

10/3 hr

7 hr

4/3 hr

Explanation:

Tap A fills the tank in 8 hours
Tap B fills the tank in 13 hours
To fill 1/3 tank A take t time
t/8 =1/3
t=8/3 hours
Tap B fill 2/3 level T1 time
T1/13 =2/3
T1 =26/3 hours
Total time =26/3 + 8/3
=34/3