Answer:
1 1/2 miles
Step-by-step explanation:
The problem statement tells us Mara ran 4/5 of 1 7/8 miles.
The procedure usually recommended for multiplying mixed numbers is to convert them to improper fractions first. Doing that, we find the product to be ...
[tex]\dfrac{4}{5}\times1\dfrac{7}{8}=\dfrac{4}{5}\times\dfrac{1\times8+7}{8}=\dfrac{4}{5}\times\dfrac{15}{8}\\\\=\dfrac{4\cdot3\cdot5}{5\cdot4\cdot2}=\dfrac{3}{2}=\boxed{1\dfrac{1}{2}}[/tex]
Mara ran 1 1/2 miles.