- Rachel has some first class and some second class stamps. The ratio of the number of first dass to the number of second class stamps is 3:4 Rachel has 18 first class stamps. (a How many second class stamps do es Rachel have? b) How many stamps do es Rachel have in total?
a.)Rachel should have 6 second class tramps. Because if you do the equation 6+6+6 you get 18 (the number of first class stamps she has) 2.)Add 6 to 18 to get your answer :)
