A train leaves Chicago traveling west at
60 miles per hour. An hour later, another
train leaves Chicago traveling east at
80 miles per hour. Complete and solve
the equation to find when the two trains
are the same distance from Chicago.

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.