amount in 12 cookies....12 cookies is 1/3 of 36 cookies...so multiply the ingredients in 36 cookies by 1/3 to get ur ingredients for 12 cookies.
flour : (2 1/4) * 1/3 = 9/4 * 1/3 = 9/12 = 3/4 cups
baking soda : 1 tsp * 1/3 = 1/3 tsp
salt : 1/2 tsp * 1/3 = 1/6 tsp
butter : 1 cup * 1/3 = 1/3 cup
sugar : 3/4 cup * 1/3 = 3/12 = 1/4 cup
eggs : 3 eggs * 1/3 = 1 egg
vanilla extract : 2 tsp * 1/3 = 2/3 tsp
c. chips : 3 cups * 1/3 = 1/3 cup
walnuts : 1 1/2 cups * 1/3 = 3/2 * 1/3 = 3/6 = 1/2 cups
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60 cookies.....60/36 = 5/3 times bigger...so multiply by 5/3
flour : 2 1/4 * 5/3 = 9/4 * 5/3 = 45/12 = 3 3/4 cups
baking soda : 1 tsp * 5/3 = 5/3 = 1 2/3 tsp
salt : 1/2 tsp * 5/3 = 5/6 tsp
butter : 1 cup * 5/3 = 5/3 = 1 2/3 cups
sugar : 3/4 cup * 5/3 = 15/12 = 1 1/4 cup
eggs : 3 eggs * 5/3 = 15/3 = 5 eggs
vanilla extract : 2 tsp * 5/3 = 10/3 = 3 1/3 tsp
c. chips: 3 cups * 5/3 = 15/3 = 5 cups
walnuts: 1 1/2 cups * 5/3 = 3/2 * 5/3 = 15/6 = 2 1/2 cups
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12/(3/4) = x / (3/2)
3/4x = 18
x = 18 * 4/3
x = 24....
so we are dealing with 24 cookies on this one...so that means double the ingredients of the 12 cookies
flour: 3/4 * 2 = 6/4 = 1 1/2 cups
baking soda : 1/3 tsp * 2 = 2/3 tsp
salt: 1/6 tsp * 2 = 2/6 = 1/3 tsp
butter: 1/3 cup * 2 = 2/3 cups
sugar: 1/4 cup * 2 = 2/4 = 1/2 cup
eggs: 1 egg * 2 = 2 eggs
vanilla extract: 2/3 tsp * 2 = 4/3 = 1 1/3 tsp
c. chips: 1/3 cup * 2 = 2/3 cup
walnuts : 1/2 cup * 2 = 1 cup
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36/(3/4) = x / (3/2)
3/4x = 54
x = 54 * 4/3
x = 72...so we are dealing with 72 cookies here. Thats 6 times bigger then the 12 cookies...so multiply the 12 cookie ingredients by 6.
flour : 3/4 * 6 = 18/4 = 4 1/2 cups
baking soda : 1/3 tsp * 6 = 6/3 = 2 tsp
salt: 1/6 tsp * 6 = 1 tsp
butter: 1/3 cup * 6 = 6/3 = 2 cups
sugar: 1/4 cup * 6 = 6/4 = 1 1/2 cup
eggs: 1 egg * 6 = 6 eggs
vanilla extract: 2/3 tsp * 6 = 12/3 = 4 tsp
c. chips: 1/3 cup * 6 = 6/3 = 2 cups
walnuts: 1/2 cup * 6 = 6/2 = 3 cups