Proportions snack mix

Question

A recipe for snack mix calls for 3/8 ounce almonds to make two servings. How many ounces of almonds do you need to make 25 servings?

Answer 1

You can use a proportion: (3/8) is to 2 as x is to 25; write it as ½•(3/8) = x/25, then solve for x.

 

Another easy (mental math) is to simply realize that going from 2 servings to 25 servings requires 12.5 (i.e. 25/2) as an upscaling factor.  So multiply 3/8 oz almonds [0.375 oz] by 12.5 to get the larger requirement for almonds.

 

I expect you to do these calculations--do both, and they should be equivalent.