Respuesta :
It is given in the question that, you run
[tex] 1 \frac{3}{4} mile = \frac{1*4+3}{4} = \frac{7}{4} mile [/tex]
And your friend runs, four times faster .
So your friend runs
[tex] 4* \frac{7}{4} = 7 miles [/tex]
So your friend runs 7 miles each day .