Apitcher contained 32 ounces of orange juice and 12 ounces of grapefruit juice more grapefruit juice was added to the pitcher until grapefruit juice represented 1/3 of the pitcher contents. how many ounces of grapefruit juice were added?

There are 10.666 ozs of orange juice and 21.3333 ozs. of grapefruit juice.

Your question isn't complete so I can only answer what you have up there.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.