a solution must contain at least 30% orange juice but not more than 20% ginger ale in addition to its other ingredients. If the punch bowl is to hold 400 cups of this solution, what are the amounts of orange juice and ginger ale?

1 answer

o cups orange
g cups ginger
f cups filler

o + g + f = 400

120 </= o </= 400

0 </= g </= 80

f </= 280