In a question like this, the number after the word "of" goes on the bottom (denominator) and the number after "is" goes on top (numerator), forming a fraction. Divide the top number by the bottom number, as 51 divided by 170=.30.
That equals 30 percent when you multiply .30 by 100 and move the decimal point two places to the right (one place for each zero in 100.)
30% of 170 = 51
30% of 170 = 30% * 170 = 0.3 * 170 = 51
(.3)*(170) = $51
51
% rate = 170% = 51/30 * 100% = 1.7 * 100% = 170%
30% off of 170= 30% discount applied to 170= 170 - (30% * 170)= 170 - 51= 119
Well, isn't that a happy little math problem we have here! To find out what number 51 is 170 percent of, we can set up a simple equation. We divide 51 by 1.70 (which is 170 percent as a decimal) to find that the number is 30. Keep on painting those beautiful mathematical equations, my friend!
.30 x 170 = 51 wrong
15% of 170= 15% * 170= 0.15 * 170= 25.5
70 percent of 170 is 119.
100% - 170% = -0.3% * * * * * Surely, 100% - 170% = -70%
170 = 17,000%