Experience the power of community-driven knowledge on IDNLearn.com. Find the answers you need quickly and accurately with help from our knowledgeable and experienced experts.

At a dairy plant, a milk tank can be filled in 4 hours using the in-valve. Using the out-valve, the tank can be emptied in 8 hours. If both valves are open and milk is being pumped into the tank, how long will it take to fill the tank?

Sagot :