A person travels equal distances with speeds of 3 km/hr, 4 km/hr and 5 km/hr and takes a total time of 47 minutes. The total distance (in km) is :  Pick:	A) 1	B) 2	C) 3	D) 4	E) 5
Sol.   Let the total distance be 3x km.   Then, x/3 + x/4 + x/5 = 47/60 ⇔ 47x/60 = 47/60 ⇔ x = 1.   ∴ total distance = (3*1)= 
<gadget id="calculator">(3*1)</gadget>
<output>3</output>
3km.   Answer 3
<result>C</result>
A person travels equal distances with speeds of 3 km/hr, 4 km/hr and 5 km/hr and takes a total time of 47 minutes. The total distance (in km) is :