Walking at the rate of 4 kmph a man covers certain distance in 2 hrs 45 min. Running at a speed of 16.5 kmph the man will cover the same distance in how many minutes ?
Distance covered by the man walking at 4 kmph in 2 hrs 45 min
= speed * time
= 4 * (2 + $$\frac{45}{60}$$) = 4 * $$\frac{11}{4}$$
= 11 km
Now, time required to cover 11 km at 16.5 kmph
= $$\frac{distance}{speed}$$
= $$\frac{11}{16.5}$$ = $$\frac{2}{3}$$ hrs
= $$\frac{2}{3} * 60$$ = 40 minutes
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