Question

Sheila walks at the speed of her usual speed (20/21) and

Q: Answer-Sheila walks at the speed of her usual speed (20/21) and determines a clear distance in six minutes...

Let the speed of the Sheila be 21 unit Speed of the Sheila after decrement 21 x 2021 20 unit Speed ratio 21 20 Time ratio 2021 ...... Time taken is inversely proportional to speed 21-21 1 unit 1 unit 6 min 20unit 6 x 20 120 min Total time taken by Sheila at usual speed was 120 min.

determines a clear distance in six minutes more than the time it takes in normal speed. Calculate the normal time it takes in determining a certain distance.

A 130

B 120

C 140

D 150

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