Filling with the information given, we have:
Multiply the original recipe by 10 (Since we have to serve 10 people)
New recipe:
Salt: 1/8 x 10 = 10/8 = 5/4 (Multiplying fractions and simplifying)
5/4 = 1 1/4 ( Converting the fraction to a mixed number)
Evaporated milk : 1 x 10 = 10 cans.
Vanilla: 1 x 10 = 10 teaspoons.
Brown sugar: 1/4 x 10 = 10/ 4 = 5/2 (Multiplying fractions and simplifying)
5/2 = 2 1/2 (Converting the fraction to a mixed number)
The values of the new recipe are:
Salt: 1 1/4
Evaporated milk: 10 cans
Vanilla: 2 1/2 teaspoons
Brown sugar: 2 1/2 cups