Two taps A and B can fill a tank in 10 min and 15 min, respectively. In what time will the tank be full if Tap B was opened 3 min after Tap A was opened?

Question

Two taps A and B can fill a tank in 10 min and 15 min, respectively. In what time will the tank be full if Tap B was opened 3 min after Tap A was opened? (A) 6 min 12 s (B) 7 min 12 s (C) 8 min 12 s (D) 9 min 12 s

Tardigrade Admin · Accepted Answer

Find the work done by A in 3 min

Q. Two taps $A$ and $B$ can fill a tank in $10 min$ and $15 min$ , respectively. In what time will the tank be full if Tap $B$ was opened $3 min$ after Tap $A$ was opened?

$6 min 12 s$

$7 min 12 s$

$8 min 12 s$

$9 min 12 s$

Find the work done by $A$ in $3 min$

Q. Two taps A and B can fill a tank in 10min and 15min, respectively. In what time will the tank be full if Tap B was opened 3min after Tap A was opened?

6min12s

7min12s

8min12s

9min12s