JoJo has 1 1/2 cups of sugar. She used 3/4 cup for her cookies. How much does she have left?

A. 3/4 cup
B. 1 1/4 cups
C. 2/4 cup
D. 2 1/4 cup

1 answer

To determine how much sugar JoJo has left, we need to subtract the amount of sugar she used from the total amount she initially had. Let's perform the subtraction:

1. Start with the initial amount of sugar:
\( 1 \frac{1}{2} \) cups

2. Convert the mixed number to an improper fraction:
\( 1 \frac{1}{2} = \frac{3}{2} \) (since \( 1 \frac{1}{2} = 1 + \frac{1}{2} = \frac{2}{2} + \frac{1}{2} = \frac{3}{2} \))

3. Subtract the amount of sugar used, which is \( \frac{3}{4} \):

First, find a common denominator for the fractions \( \frac{3}{2} \) and \( \frac{3}{4} \). The common denominator is 4.

Convert \( \frac{3}{2} \) to a fraction with denominator 4:
\[
\frac{3}{2} = \frac{3 \times 2}{2 \times 2} = \frac{6}{4}
\]

Now we subtract:
\[
\frac{6}{4} - \frac{3}{4} = \frac{6 - 3}{4} = \frac{3}{4}
\]

So, JoJo has \( \frac{3}{4} \) cup of sugar left.

Thus, the correct answer is:
**A. 3/4 cup**
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