Q158
A man covers a total distance of 100 km on bicycle. For the first 2 hours, the speed was 20 km/hr and for the rest of the journey, it came down to 10 km/hr. The average speed will be :
A.
km/hr
AnswerB.
13 km/hr
C.
km/hr
D.
20 km/hr
Answer: Option A
Solution
Answer: Option A
Solution:
Distance covered in 1st 2 hr := 2 × 20
= 40 km
Time taken to cover 60 km distance
=
= 6 hours