Answer:
[tex]2.05\ miles[/tex] or [tex]2\frac{1}{20}\ miles[/tex]
Step-by-step explanation:
we know that
To calculate the total distance Barb walked, add the distance to her friend's house plus the distance to the library.
so
[tex]1.3+\frac{3}{4}[/tex]
Remember that
[tex]1.3=\frac{13}{10}[/tex]
substitute
[tex]\frac{13}{10}+\frac{3}{4}=\frac{13*2+5*3}{20}[/tex]
[tex]=\frac{41}{20}\ miles[/tex]
[tex]=2.05\ miles[/tex]
Convert to mixed number
[tex]\frac{41}{20}=\frac{40}{20}+\frac{1}{20}=2\frac{1}{20}\ miles[/tex]