RRB NTPC Mains or Stage 2 Model Paper 4 with solutions

Question : 5 of 120

Marks: +1, -0

A man walks at the speed of 5 km/hr and runs at the speed of 10 km/hr. How much time will the man require to cover the distance of 28 km, if he covers half (first 14 km) of his journey walking and half of his journey running ?

8.4 hrs
6 hrs
5 hrs
4.2 hrs

Validate

Solution:

(d) Total time required

= 14/5+ 14/ 10

={ 28 +14}/10 = 4.2 hrs

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