Question

Eva’s recipe for cookies calls for $\frac{3}{4}$ of a cup of sugar. If Eva needs to make double the amount of cookies, how many cups of sugar will she need?

• A. $2\frac{1}{2}$
• B. $1\frac{1}{2}$
• C. $1$
• D. $\frac{1}{2}$

Answer 1

The correct option is B $1\frac{1}{2}$

$\frac{3}{4}$ of a cup of sugar is needed to make a certain number of cookies.
To make double the number of cookies, the amount of sugar needed will also double $=\frac{3}{4}\times 2=\frac{3\times 2}{4}=\frac{6}{2}$
$=\frac{6÷2}{4÷2}=\frac{3}{2}=1\frac{1}{2}$
Hence, Eva will need $1\frac{1}{2}$ cups of sugar.