Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are
opened simultaneously, after how much time should B be closed so that the tank is full in 18
minutes?
Select the correct option
A) 7 minute B) 9 minute C) 10 minute D) 8 minute E) 11 minute
pipe A will work for 18 minutes. suppose pipe B is closed after x minutes than   we have 18/24+x/32=1   x=8 minute.   ANSWER:8 minute
<result>D</result>
Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are
opened simultaneously, after how much time should B be closed so that the tank is full in 18
minutes?