SOLUTION: while at the post office Mrs. Adams purchased $2.39 worth of stamps. The number of 3 cent stamps exceeded four times the number of 6 cent stamps by 1. Also the number of 3 cent sta

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: while at the post office Mrs. Adams purchased $2.39 worth of stamps. The number of 3 cent stamps exceeded four times the number of 6 cent stamps by 1. Also the number of 3 cent sta      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 1050192: while at the post office Mrs. Adams purchased $2.39 worth of stamps. The number of 3 cent stamps exceeded four times the number of 6 cent stamps by 1. Also the number of 3 cent stamps was 13 less than the number 2 cent stamps. How many of each kind did she purchase?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
Let n be the number of 6-cent stamps. Then 3-cent stamps are 4n+1, and 2-cent stamps are (4n+1)+13:4n+14. So:
6n+3(4n+1)+2(4n+14)=239
26n+31=239
26n=208
n=8
Mrs. Adams bought 8 6-cent stamps,33 3-cent stamps, and 46 2-cent stamps. ☺☺☺☺