Asked by Anonymous
Julio is mailing a small package to Tony, who lives in another city. Julio has to put 18 cents worth of stamps on the package. Julio has 10 cent stamps, 4 cent stamps, and 2 cent stamps that he can use. How many
different groups of stamps could Julio use on his package?
different groups of stamps could Julio use on his package?
Answers
Answered by
oobleck
10+4+4 = 18
Now start replacing those stamps with smaller ones (4=2+2, 10=4+4+2, etc.), till you get all the way down to
2+2+2+2+2+2+2+2+2 = 18
Now start replacing those stamps with smaller ones (4=2+2, 10=4+4+2, etc.), till you get all the way down to
2+2+2+2+2+2+2+2+2 = 18