Question

Mrs.Manning is making cookies for the bake sale. She jas 3/4 cup of flour and needs 1/3 cup of flour for her chocolate chip cookies. What fraction of the flour Mrs.Manning has will be used for her chocolate chip cookies?

Answer 1

The fraction of the flour Mrs. Mannng will use for her chocolate chip cookies is 4/9

Explanation:

Fraction of Portion

Suppose we have a number n and another number m such as m>n. The portion or fraction of size n of m is given by the quotient n/m.

For example, 3 pieces of cake out of a total of 6 make them a fraction of 3/6 = 1/2 of the whole cake, i.e. half of the total available.

Mrs. Manning needs 1/3 cup of flour to make cookies for the bake sale. She actually has 3/4 cups of flour. Calculate the fraction of needed against the available flour:

`\displaystyle ((1)/(3))/((3)/(4))`

The division can be easier performed by multiplying by the reciprocal of the denominator:

`\displaystyle (1)/(3)\cdot (4)/(3)=(1*4)/(3*3)`

`\displaystyle =(4)/(9)`

The fraction of the flour Mrs. Mannng will use for her chocolate chip cookies is 4/9