Taps A and B can fill a bucket in 12 minutes and 15 minutes respectively. If both are opened and A is closed after 3 minutes, how much further time would it take for B to fill the bucket?	Select the correct option:
A) 8 min 15 sec	B) 7 min 15 sec	C) 6 min 15 sec	D) 5 min 15 sec	E) 4 min 15 sec
Explanation:   Part filled in 3 minutes =   3∗(1/12+1/15)=3∗9/60=9/20   Remaining part =1−9/20=11/20   =&gt;1/15:11/20=1:X   =&gt;X=11/20∗15/1   =&gt;X=8.25mins   So it will take further 8 mins 15 seconds to fill the bucket.   Option 8 min 15 sec
<result>A</result>
Taps A and B can fill a bucket in 12 minutes and 15 minutes respectively. If both are opened and A is closed after 3 minutes, how much further time would it take for B to fill the bucket?