AP ICET 2019 Shift 2 Paper

Question : 97 of 200

Marks: +1, -0

Tap A can fill a tank in 6 hours and another tap B can empty that full tank of water in 4 hours. If tap A is opened at 6 AM and after 3 hours tap B is opened, then the time by which the tank will be empty is

1 P.M.
2 P.M.
3 P.M.
4 P.M.

Validate

Solution:

let the Pipe B working for t hours

\;{t}/{4}-\;{t+3}/{6}=1 ⇒ t=6

The tank will be empty after 9 hours from 6 A.M
i.e. = 3 P.M.

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