LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Commercial Mathematics by (31.5k points)
closed by

Two pipes can fill a tank in 20 minutes,end 30 minutes respectively. If both the pipes are opened simultaneously then the lank will he filled 

A. 10 minutes 

B. 12 minutes 

C. 15 minutes 

D. 25 minutes

1 Answer

+1 vote
by (31.0k points)
selected by
Best answer

Number of minutes Pipe A requires to fill an empty tank : 20 minutes 

Number of minutes Pipe B requires to fill an empty tank : 30 minutes

Amount of water filled by Pipe A in empty tank in one minute: \(\frac{1}{20}\)

Amount of water filled by Pipe B in one minute: \(\frac{1}{30}\)

Amount of water filled by Pipe A and Pipe B together in one minute: 


∴ They can fill the tank together in 12 minutes.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.