Answer:
a. RCF = 2.5
b. New amounts for the ingredients:
Ingredients    New Amount
Juice          5 quarts
Lemons        5 mediums
Limes         5 mediums
Strawberries  50 mediums
Explanation:
a) Data and Calculations:
Yields from basic punch recipe = 64 fl oz
Servings from the yields = 8 portions of 8 fl oz each
Required portions increase = 20 portions of 8 fl oz each
To increase to 20 ports, fl oz of recipe required = 64 * 20/8 = 160 fl oz
b) Therefore, RCF = Total new portions/total old portions = 20/8 or
Yields for new recipe/Yields for old recipe = 160/64 = 2.5
c) Listing the appropriate answers for the scaled recipe:
Ingredients    Old Amount    RCF     New Amount
Juice          2 quarts      2.5       5 quarts   (2 * 2.5)
Lemons        2 mediums   2.5       5 mediums (2 * 2.5)
Limes         2 mediums   2.5       5 mediums (2 * 2.5)
Strawberries  20 mediums   2.5      50 mediums (20 * 2.5)