to show this, use cross multiplication! if 5 are shaded and 6 are unshaded, there are 11 total. if we are trying to find what percent is unshaded, we use the unshaded bit.
6/11 is unshaded- a percent is out of 100, so your second denominator is out of 100
6/11 = ?/100
multiply 6 and 100 to get 600, then divide by 11. this gives you 54.54 continuously, so draw a line over the .54 and that is your answer, 54.54 (line over .54) percent. or, if you round, either 54.55 percent or 55 percent :]
hope this helps!
