Keeping track of information with a table

One thousand kilograms per hour of a mixture containing equal parts by mass of ethanol and water< is distilled. Product streams leave the top and the bottom of the distillation column. The flowrate of the bottom stream is measured and found to be 673 kg/h, and the overhead stream is analyzed and found to contain 96 wt% ethanol. Find the flowrates of all components in all streams.

You can see that we are told that the feed rate to the distillation column is 1000 kg/hr. We are also told that the bottoms flowrate is 673 kg/hr. This will allow us to fill in the two highlighted boxes below:

Streams\mass flow rate	Total	Ethanol	Water
Feed	F_feed,total	F_feed,ethanol	F_feed,water
Overhead	F_{overhead,total}	F_{overhead,ethanol}	F_{overhead,water}
Bottoms	F_{bottoms,total}	F_{bottoms,ethanol}	F_{bottoms,water}

Click on the radio buttons (only once for each button) to choose the boxes that you can immediately fill in without doing any math at all. Then,