Question

a personal trainer uses calipers to determine percent body fat. After taking the necessary measurements, the personal trainer determines that the clients body contains 11% fat by mass. if the client weighs 225 lb, how many kg of fat does the client have?

Answer 1

You need to calculate 11% of 225 lb
In math, "of" usually means "times"
11% of 225 lb = 11% * 225 lb
% means 1/100 or 0.01, so 11% = 0.11
0.11 * 225 lb =
Just multiply 0.11 by 225