Suppose that the grade 7 students expect to sell between 100 and 150 hot dogs how many packages of 12 wieners and 8 buns should the students buy if they don't want any leftovers justify your answer

They would have to buy 10 packs of wieners and 15 packs of buns because 12 x 10 would equal 120 and 8 x 15 would also equal 120 leaving no leftover and keeping the number of hot dogs in the 100 - 150 range