Hi Please let me know, whether my approach is correct and whether we can have a faster method to get the right answer
It takes the car 5 sec. longer to travel 1 KM than it would take, had it traveled at 80Kp/Hr
This would mean that it would take the car 200 sec extra had it traveled 40KM
that is equivalent to 10/3 minutes extra to 30 min. it would have taken at 80Km/Hr
Thus it would take 30 + 10/3 minutes to cover 40 Km or 100/3 min = 100/(3*60) hrs
Thus the current speed would be 40*3*60 /
...
It takes the car 5 sec. longer to travel 1 KM than it would take, had it traveled at 80Kp/Hr
This would mean that it would take the car 200 sec extra had it traveled 40KM
that is equivalent to 10/3 minutes extra to 30 min. it would have taken at 80Km/Hr
Thus it would take 30 + 10/3 minutes to cover 40 Km or 100/3 min = 100/(3*60) hrs
Thus the current speed would be 40*3*60 /
...
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