Two cars A and B travel along the same line the car travel with the speed 60 km per hour and car B 75 km per hour but one hour later how many time will it take to over take B
Answers
Car A is ahead of car B by 60 Km before car B leaves the starting point. In the first hour after car B leaves, car A will have traveled 120 Km ( 2 Hrs × 60 km/h= 120 Km. Remember car A left one hour before car B. Car B in the first hour from departure will have traveled 75 Km at 75 Km/h The third hour after departure car A will have traveled 180 km. (3 HRS × 60 Km/H =180 Km) Car B will be in the second hour since departure traveling at 75 Km/h. (2 Hrs× 75 Km/h= 150 Km). Car A in its 3rd hr.has now traveled 180 km and car B in its 2nd Hr has now traveled 150 Km. Car B has now closed the distance from 60 Km to 30 Km from Car A. In the 4th hour after departure Car A will have traveled 240 Km. (4Hrs.× 60 Km/h= 240 Km. Car B after leaving the starting point 1 Hr. after Car A will be in its 3rd Hr of travel. ( 3 Hrs × 75 Km/h = 225 Km. Car A Has now completed 5 Hrs of travel and has gone 300 km. at 60 Km/h. ( 5 Hrs × 60 Km/h= 300 km).Car B after 4 Hrs. of travel at 75Km/h has now travled the same distance as car A. ( 4 Hrs ×75 Km/h =300 Km). Car B would need to complete 4 Hrs of traveling to catch up and overtake Car A who had a 60 Km head start over car B.