Subject
Bank Exam
Topic
Rupali Bank 2010 (Officer)
Pipe A can fill up a tank in 40 minutes and pipe B can fill up the same tank in 30 minutes, how many minutes will it take for the two pipes together to fill up the tank?
Pipe A can fill up a tank in 40 minutes and pipe B can fill up the same tank in 30 minutes, how many minutes will it take for the two pipes together to fill up the tank?
ক)
10খ)
15গ)
17(1/7)ঘ)
18(4/7)Explanation
pipe A can fill up 1/40 part of the tank in 1 minute pipe B can fill up 1/30 part of tha tank in 1 minute together the can fiil = (1/40 + 1/30) = 7/120 part in 1 minute 7/120 part in 1 minute 1 or full part = 120/7 minute = 17 (1/7) minuteRelated questions
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