Question

Two cars travel from city A to city B at a speed of 42 and 60 km/hr respectively. If one car takes 2 hours lesser time than the other car for the journey, then the distance between City A and City B is?

• A. 420 km
• B. 400 km
• C. 224 km
• D. 280 km

Answer 1

Answer:

D. 280 km

Let the distance between the city A and city B be ‘x’ km. Speed of car 1 = 42 km/hr Speed of car 2 = 60 km/hr Time = Distance/Speed ⇒ Time taken by car 1 to travel from city A to city B = x/42 ⇒ Time taken by car 2 to travel from city A to city B = x/60 ⇒ (x/42) - (x/60) = 2 ⇒ x = 280 km