Sergio is making punch for a school party. The recipe he is using calls for 3 cups of fruit juice to make 7 cups of punch. He made a ratio table to help him determine how much fruit juice he will need. Sergio thinks he will need 90 cups of fruit juice to make 210 cups of punch. Explain his method.

Answer 1

I used a proportion and got the same answer.

3/7 = x/210

Answer 2

17 gr6