1.

A train travels 40 km at a uniform speed of 30 kmh−1. Its average speed after travelling another 40 km is 45 kmh−1 for the whole journey. Its speed in the second half of the journey is:

Answer»

A train travels 40 km at a uniform speed of 30 kmh1. Its average speed after travelling another 40 km is 45 kmh1 for the whole journey. Its speed in the second half of the journey is:




Discussion

No Comment Found