In the following example, it is necessary to convert the percent to a decimal. Then multiply 200 by .30, which results in 60. To convert a percent to a fraction , just make the percent the numerator of a fraction with denominator 100 and reduce the fraction. To convert a fraction to a percent, divide the numerator by the denominator and move the decimal point two places to the right. To do so, use long division and move the decimal point.
Every fraction is a ratio and every ratio is a fraction .
A fraction is just the ratio of the numerator to the denominator. Anytime you see a ratio, treat it just like a fraction . Anything you can do to a fraction, you can also do to a ratio, including cross-multiplying, reducing, finding common denominators, etc. Dividing 24 by 3 yields 8 which means each of the 3 parts in the ratio consists of 8 coins. Two of the parts are pennies at 8 coins per part, so there are 16 pennies.