A

Admin • 828.03K Points
Coach

Q. Pipe A can fill a tank in 9 hours and pipe B in 18 hours. If pipe A works for 3 hours and then pipe B alone finishes the work, how long will the total work take?

  • (A) 6 hours
  • (B) 7 hours
  • (C) 8 hours
  • (D) 9 hours
Explanation by: Admin
A does 1/3 work. Remaining 2/3 done by B in 12 hours → total 15 hours.

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Be the first to start discuss.