Flour and Tortillas

Question

The Centralville High school Cooking Club has 12 1/2 pounds of flour with which to make tortillas. There are 3 3/4 cups in a pound, and it takes about 1/3 cup of flour per tortilla. How many tortillas can they make.

Answer 1

12.5 pounds * 3.75 ^cups/_pound = 46.875 cups

 

46.875 cups / ^{1 cup}/_{3 tortillas}

46.875 cups *  ^{3 tortillas}/_cup

46.875  *  3 tortillas = 140.625

 

625/1000

25/40

5/8

 

So they can make 140 complete tortillas, or 140 ⁵/₈ (or 140.625) tortillas if you want complete accuracy.

Answer 2

How many cups of flour do they have?

(12 1/2)(3 3/4)

(25/2)(15/4)

375/8

 

How many tortillas?

375/8 ÷ 1/3

(375/8)(3/1)

1125/8

 

140 with some left over