Time and Distance Practice Test 1 with solutions

Question : 39 of 40

Marks: +1, -0

A person travels from P to Q at a speed of 40 km/hr and returns by increasing his speed by 50%. Find his average speed for both the trips.

Solution:

Let distance between P to Q = x km
Average speed =

{x+x}/{x/{40}+x/{40×{150}/{100}}

{2x}/{x/{40}+x/{60}}

{2×120}/5

= 48 km/hr

Go to Question:

Prev Question

Next Question