A pipe fills a tank in 4 hours. Another fills it in 6 hours. How long will both take together?

Step-by-step word problems solution

Combined Rates word problem

Pipe A = 4 hours

Pipe B = 6 hours

Find: Combined time

How do you solve A pipe fills a tank in 4 hours. Another fills it in 6 hours. How long will both take together??: Work through it one step at a time — the interactive walkthrough above shows exactly how each step is calculated, not just the final answer.
What topic is "A pipe fills a tank in 4 hours. Another fills it in 6 hours. How long will both take together?" an example of?: This is a Word Problems question, solved here with a step-by-step visual explanation.
Can I practise more questions like "A pipe fills a tank in 4 hours. Another fills it in 6 hours. How long will both take together?"?: Yes — use the "Ask your own question" box above to try any similar word problems question and get an interactive step-by-step solution.
Is "A pipe fills a tank in 4 hours. Another fills it in 6 hours. How long will both take together?" solved with a calculator, or manually?: The steps shown here are the same manual method a teacher would use at the board, so you can see how the answer is reached, not just what it is.
Why does showing each step matter for "A pipe fills a tank in 4 hours. Another fills it in 6 hours. How long will both take together?"?: Writing out each step makes it possible to check the working, catch mistakes early, and understand the method well enough to reuse it on a different question.