The speeds of two cars A and B are in the ratio 3 : 2. Car A travels for 4 hours, while Car B travels for 5 hours. If the difference between the distances covered by the two cars is 20 km, then find the speed of Car B (in km/hr).

Explanation

​ Information Given: Speed ratio of A : B = 3 : 2 Time taken by A = 4 hours Time taken by B = 5 hours Difference in distances = 20 km Concept/Formula Used: Speed = Distance / Time Let speeds be 3x and 2x Distance = Speed × Time www.freshersnow.com Explanation: Let speed of A = 3x km/hr Let speed of B = 2x km/hr Distance covered by A = 3x × 4 = 12x Distance covered by B = 2x × 5 = 10x Difference in distance = 12x − 10x = 2x Given, 2x = 20 x = 10 Speed of B = 2x = 2 × 10 = 20 km/hr