A person travels equal distances with speed of 3 km/hr, 4 km/hr and 5 km/hr and takes a total of 47 minutes. Find the total distane

A. 3 km

B. 4 km

C. 6 km

D. 9 km

Correct Answer :

A. 3 km

Let the distance be 3x km, $then,\frac{x}{3}+\frac{x}{4}+\frac{x}{5}=\frac{47}{60}$ $\frac{47x}{60}=\frac{47}{60}$ $x=1$ So total distance = 3*1 = 3 Km