Arecipe for sparkling grape juice calls for 1 1/2 quarts of sparkling water and 3/4 quarts for grape juice, how much of each ingredient would you need to make 100 quarts of punch?

Step-by-step explanation:

The ratio of sparkling water to grape juice is ...

  (1 1/2 quarts) : (3/4 quarts) = (3/2) : (3/4) =  2 : 1

So, the amount sparkling water in the total volume is 2 : (2+1) = 2/3 of the total volume. For a volume of 100 quarts, the sparkling water content is ...

  2/3 · 100 quarts = 66 2/3 quarts

Then the grape juice content is ...

  1/3 · 100 quarts = 33 1/3 quarts