Hamburger buns come in packages of 8. Pre-made hamburger patties come in boxes of 10. Billy would like to buy the smallest number of hamburger buns and hamburger buns and hamburger patties so that he will have exactly 1 pattie per bun. a. What is the minimum number of buns/patties he should buy? b. How many packages of buns must he buy? c. How many boxes must he buy?