Question

A person travels from New York to Washington at the rate of 45 Km per hour and
comes backs to the New York at the rate of 55 Km per hour. What is his average
speed for the whole journey?

Answer 1

A person travels from new York to Washington at 45 km per hours comes back to New York 55 km per hour Answer is :-15 km

Answer 2

Answer:

average speed =total distance travelled /total time taken

let distance between New York And Washington be x.

time taken to travel from New York to Washington=x/45

time taken to travel from Washington to New York =x/55

total time taken =x/45 + x/55 =4x/99

So, average speed =total distance travelled /total time taken

= 2x/ (4x/99) = 49.5km/hr

Step-by-step explanation: