Two heavily loaded sixteen-wheeler transport trucks are 770 kilometers apart, sitting at two rest stops on opposite sides of the same highway. Driver A begins heading down the highway driving at an average speed of 90 kilometers per hour. Exactly one hour later, Driver B starts down the highway toward Driver A, maintaining an average speed of 80 kilometers per hour. How many kilometers farther than Driver B, will Driver A have driven when they meet and pass each other on the highway?
1. Driver A traveled totally for 1 hr + (770-90)/ (90+80) hrs= 5 hrs. Distance traveled = 90*5=450 km
2. Driver B traveled 1 hr less i.e., he traveled for 4 hrs. Distance traveled = 80*4=320 km
3. Difference is, 450-320=130km
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