S= V*T
S- ELDI MEKEN MEN STANSIANIN ARASI, T- POEZDIN JURU UAKITI, 20,12 mindi sagatka ainaldiramiz. 20/60sagat, 12/60 sagat.
S=60*(t-20/60)
S=50(t+12/60) Eki jagi ten iagni juretin jol birdei. Sondiktan tenestremiz: 60*(t-20/60)=50*(t+12/60)
60t-20=50t+10 ;10t=30; t=3sagat sodan kein kez-kelgen stegi t- tin orinana koip S ti tabamiz.
S= 60*(3-1/3)=160km