Pipe x can fill a tank in 20 hours and pipe y can fill the tank in 35 hours. Both the pipes are opened on alternate hours. Pipes y is opened first then in how much time in hours the tank will be full?

Pankaj Soni 6y ago

Nikhilesh Thakur 6y ago

Dina Jose. J 6y ago

Shubhi Saxena 6y ago