Răspuns :
100%-24%=76% mai are de parcurs
76%...........18km
100%....... x km
_______________-
x=100x18/76
x=23,6 km
76%...........18km
100%....... x km
_______________-
x=100x18/76
x=23,6 km
insemana ca 100%-24%=76% reprezinta cei 18 km
deci drumul intreg de 100% are : x=1800/76=23,684km
deci drumul intreg de 100% are : x=1800/76=23,684km