Question

A tank has two inlets A and B and has one outlet C. Inlets A and B fill the tank in 4 hours and 3 hours respectively. Outlet C empties the tank in 2 hours. Find the time required to fill the tank completely .​

Answer 1

Answer:

Step-by-step explanation:

let work to be done be 12 units

efficiency= work/time

efficiency of pipe A: 3 units/ hour

efficiency of pipe B: 4 units/ hour

efficiency of pipe C: -6 units/ hour

Net efficiency: 3+4-6= 1

time: work/efficiency

time=  12hours