Question: Air flows through a duct at 2 , 1 0 0 cubic feet per minute ( CFM ) . After several feet and a few

Air flows through a duct at 2,100 cubic feet per minute (CFM). After several feet and a few vents, the air-flow decreases to 1,680 CFM. What is the percent drop that has occurred? (Simp
your answer completely.)
% drop
Enter an exact number.
Air flows through a duct at 2 , 1 0 0 cubic feet

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