Răspuns :
x= distanta
prima zi: 30/100•x= 3x/10
a doua zi: 14 km
x= 3x/10+14 |•10
10x=3x+140
7x=140=>x=20 km
Răspuns:
30x/100=3x/10 parcurge in prima zi
3x/10+¹⁰⁾14=¹⁰⁾x
3x+140=10x
140=10x-3x
x=140:7
x=20 km are drumul
verificare:
30·20:100=6 km a parcurs in prima zi
6+14=20 km are drumul