Karmi covers a certain distance walking at \(\frac{6}{7}\) of her usual speed and takes 14 minutes more than her usual time. Calculate the usual time taken.
1 hour 24 minutes
For a fixed distance, time is inversely proportional to speed, so at \(\frac{6}{7}\) of the speed the time becomes \(\frac{7}{6}\) of the usual time.
Extra time = \(\frac{7}{6}T - T = \frac{T}{6} = 14\) minutes.
\(T = 84\) minutes = 1 hour 24 minutes.
Hence, 1 hour 24 minutes.
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