SSC GD 19th Feb 2019 Shift-3

Question 58

Walking at 75% of his usual speed, Raghu is 80 minutes late to his office. What is his usual time in hours to cover the same distance?

Solution

Let the original speed and time taken be 'V' and 't'
Same distance is covered in both the cases.
Therefore Vt=(3/4)V(t+80)
4t=3t+240
t=240/60 hours
t=4 hours


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