A sample of college students participated in a sleep study. The amount of REM sleep was recorded before and after an experimental drug was administered. The two samples of REM sleep time are compared to determine how much of a difference the new drug made.

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.