Question 522982
Effective Speed = 70+55 = 125 mph
Distance = 250 miles

Time = Distance / Speed
Time = 250 / 125
Time = 2 hours


In 2 hours they will be 250 miles apart


Check
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Distance will be covered by One car in 2 hours = 70*2 = 140 miles
Distance will be covered by 2nd car in 2 hours = 55*2 = 110 miles

Total Distance between two cars = 140+110 = 250 miles