+128407 17% of 100 = 17
So.......17% of 300 must be three times as much = 3 * 17 = 51
The answer is 51 because you take 17*300 = 5100 and then you move your decimal over two places and get 51.00 Drop the zeros and you have just plain and simple 51, but on other questions you will have to work out the whole problem becuase it won't be as simple as multiplying 3 by 17.
