A man walking at a speed of 8 km/hr covers a certain distance in 1 hour 45…

Step-by-Step Solution

To find the time taken at a new speed for the same distance, we follow these steps:

1. Calculate the total distance:

   • Walking speed = 8 km/hr

   • Time taken = 1 hour 45 minutes

   • Convert time to hours: 1 hour + 45/60 hours = 1 + 0.75 = 1.75 hours (or 7/4 hours).

   • Distance = Speed * Time = 8 * (7/4) = 14 km.

2. Calculate the time taken for the new speed:

   • New speed (running) = 10 km/hr

   • Time = Distance / New Speed

   • Time = 14 / 10 = 1.4 hours.

3. Convert the time back to minutes:

   • 1.4 hours * 60 minutes/hour = 84 minutes.