At a dairy plant, a milk tank can be filled in 6 hours (using the inlet valve). Using the outlet 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 them to fill the tank?
where do I begin? is this a divison problem like 6/x + 8/y? but what do I equal it to? please help!
where do I begin? is this a divison problem like 6/x + 8/y? but what do I equal it to? please help!
