5th Class
Mathematics
Arithmetic
Question Bank
Arithmetic
question_answer
A man covers a certain distances by car, driving at a speed of 70 km/hr and he returns back to the starting point riding on a scooter at 55 km/hr. Find his average speed for the whole journey.
A) 61.0 km
B) 61.6 km
C) 67.4 km
D) 69.7 km
Correct Answer:
B
Solution :
Average speed \[=\frac{2\times 70\times 55}{70+55}km/hr\] \[=61.6km/hr\]