Anonymous

m and n are the number packages of 10 and 30, respectively. 10m + 30n = 60 m + 3n = 6 m = 6-3n So if you buy n packages of 30 cookies, you need to also by 6-3n packages of 10 cookies. n = 0, 1, or 2 (m, n) = (6,0), (3,1), (0,2) Three ways

Anonymous

If you buy 100 cookies you are still buying 60 cookies so an infinite number of ways.

Anonymous

Three. 6 x10. 2x30 and 1x30 plus 3x10. Oh, yea... you can get 60 single cookies. (sold singly) Thus, four. Peace.