Question

A car moveA to B at 40km/hr.and same car move B to A at 30km/hr.find the distance?

Answer 1

A (40kmh)----------------------------------> B
B (30kmh)----------------------------------> A

Total time = (1+1) = 2 hour.
Total Speed = 70 km/hr.
Distance = speed × time = 70×2 = 140 km