A) 60 min
B) 50 min
C) 40 min
D) 70 min
Correct Answer: B
Solution :
[b] Time taken to walk 1 km = 6 min Then, he takes rest for 5 min So, total distance of 1 km is covered in \[(6+5)=11\min \] Now, he carry on this process for next 4 km. So, the time taken to cover 4 km \[=11\times 4=44\min \] But now the next 1 km will be covered in 6 min. \[\therefore \] Total time taken \[=(44+6)=50\min \] |
You need to login to perform this action.
You will be redirected in
3 sec