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Bhanu takes a total of 6 hours 50 minutes in walking a distance and running back to the same place where she started. She could walk both ways in 8 hours 30 minutes. The time taken by her to run both ways is :

Bhanu takes a total of 6 hours 50 minutes in walking a distance and running back to the same place where she started. She could walk both ways in 8 hours 30 minutes. The time taken by her to run both ways is : Correct Answer 5 hours 10 min

Given:

Bhanu takes a total of 6 hours 50 minutes in walking a distance and running back to same place where she started. She could walk both ways in 8 hours 30 minutes.

Formula Used:

speed = distance/time

Calculation:

time taken by her to walk both ways = 8 hours 30 minutes

⇒ time taken by her to walk one way = 8 hours 30 minutes/2 = 4 hours 15 minutes

also time taken by her to walk one way and run back the same way = 6 hours 50 minutes

⇒ time taken by her to run one way = 6 hours 50 minutes - 4 hours 15 minutes = 2 hours 35 minutes 

⇒ time taken by her to run both ways = (2 hours 35 minutes) × 2 = 5 hours 10 min

∴ required time = 5 hours 10 min

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