Respuesta :

the distance Tom has to walk is - 3/8 of a mile 
from this distance he has only walked a fraction of 4/5. 
he has walked 4/5th of the distance being 3/8 of a mile 
4/5th of 3/8
we need to multiply the 2 fractions here as 'of' is the operator here.
4/5 x 3/8
[tex] \frac{4}{5} * \frac{3}{8} [/tex]
since its multiplication denominators are multiplied with denominators and numerators are multiplied with numerators
[tex] \frac{ 4*3}{5*8} = \frac{12}{40} [/tex]
we can simplify this fraction further 
[tex] \frac{12 /4}{40/4} = \frac{3}{10} [/tex]

3/10th of a mile = 0.3 miles he has walked