Two pipes 3

Two pipes A and B can fill a tank in 15 min and 20 min. Both the pipes are opened together. After 4 min, pipe A is turned off.What is the total time required to fill the tank?

Correct answer:

t =  14.6667 min

Step-by-step explanation:

a=15 min b=20 min  t1=4 min  t1 a1+t b1=1 at1+bt=1  t=b (1t1/a)=20 (14/15)=14.6667 min



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Tip: Our volume units converter will help you convert volume units.
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

    Units of physical quantities:

    Themes, topics:

    Grade of the word problem:

    Related math problems and questions: