Question

The ratio of oatmeal to raisins in the cookies was 4 to 3. If a large batch of

the recipe called for 12 cups of ingredients, how many cups of oatmeal are
needed? (Remember that we use fractions when cooking.)

Answer 1

3/2 cups of oatmeal

Explanation:

t = cups of oatmeal

r = cups of raisins

4t=3r

12=4t+3r

r = (4/3)t

12 = 4t+3(4/3)t

12 = 4t+4t

12 = 8t

t = 12/8

t = 3/2