Răspuns:
3/4km= 0,75km
71/2km=15/2km= 7,5km
0,75km.....1zi
7,5km.......x
x=10zile
Explicație pas cu pas:
[tex]7\frac{1}{2} =\frac{7*2+1}{2} =\frac{15}{2} \\\\\frac{15}{2} :\frac{3}{4} =\frac{15}{2} *\frac{4}{3} =5*2=10. zile[/tex]
