The answer is 2/7 because you're finding the greatest common factor of both numbers. The gcf is 8, so divide both by 8 and you'll get 2/7
She would by 3 packages of hot dogs and 2 packages of hot dog buns. This is because 3*8 would be 24 and 12*2 is also 24. These would both be the minimum amount of packages.
He saves $124.90 because $389.90 - $265.00 = 124.90 and so that is the difference in the prices which is the answer.
10,201 is the answer to the question