ANSWER
[tex]1 \frac{3}{4} hours[/tex]
EXPLANATION
The number of hours Amy studied for the Biology Test is
[tex]3 \frac{1}{2} hours[/tex]
We were given in the question that Amy studied half as long for her math test as she did for her biology test.
This means that the number of hours she studied for the Maths test
[tex] = \frac{1}{2} \times 3 \frac{1}{2} [/tex]
We convert to improper fractions to get:
[tex]= \frac{1}{2} \times \frac{7}{2} [/tex]
[tex] = \frac{7}{4} [/tex]
[tex] = 1 \frac{3}{4} hours[/tex]
