Question

Brianna made cookies. She used 5/8 of a cup of flour and 1/2 of a cup of sugar. How much more flour than sugar did Brianna use?

Answer 1

We have that:

• Brianna used 5/8 of a cup of flour.

,

• Brianna used (also) 1/2 of a cup of sugar.

In this case, we are comparing the same measure: cups.

Therefore, we can subtract 1/2 from 5/8 to obtain the result. Then, we have:

`(5)/(8)-(1)/(2)`

To have two fractions with the same denominator so we can subtract only the numerators, we can multiply both, the numerator and the denominator of the second fraction (1/2) by 4/4 as follows:

`(4)/(4)=1\Rightarrow(5)/(8)-(1)/(2)\cdot(4)/(4)=(5)/(8)-(4)/(8)=(5-4)/(8)=(1)/(8)`

Therefore, Brianna used 1/8 cup more flour than sugar.

In summary, we can answer it as 1/8 cup.