Direction 5122

At 7 o'clock, a truck drove from Olomouc towards Hradec Králové at an average 40 km/h speed. A passenger car left Hradec Králové, 210 km from Olomouc, in 7 hours 45 minutes with an average speed of 80 km/h. At what time and how far from Olomouc will they meet?


t = 9:03 h Wrong answer
s =  82 km

Step-by-step explanation:

s=40(t7.00) s+80(t7.45)=210  s=40 (t7.00) s+80 (t7.45)=210  s40t=280 s+80t=806  Row2Row1Row2 s40t=280 120t=1086  t=1201086=9.05 s=280+40t=280+40 9.05=82  s=82 t=20181=9.05=9:03 h

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