Question

To save fuel, to avoid air pollution and for good health two persons A and B
ride bicycle for a distance of 12 km to reach their office. As the cycling
speed of B is 2 km/h more than that of A, B takes 30 minutes less than
that of A to reach the office. Find the time taken by A and B to reach the
office.​

Answer 1

Time taken by B = 30 km/h

Time taken by A = 15 km/h 30-2=15

Total time taken by both = 30+15=45 km/h