A man covers a total distance of 100 km on bicycle For the first 2 hours the speed was 20 km hr and...........

Quant (SSC) Time & distance

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

12.5 km/hr

13 km/hr

15 km/hr

20 Km/hr

छोटे Courses बड़े Results

Master Time & distance

Prepare through Micro-courses

Try Now

Explanation:

Distance covered in 1^st 2 hours = 2 × 20 = 40 km
∴ Remaining distance = 100 – 40 = 60 km
Speed in the rest of the journey = 10 km/hr
Time taken in the rest of the journey = 60/10 = 6 hrs
∴ Average speed
= Total Distance / Total Time = 100 / 2 + 6 = 100/8
= 12.5 km/hr