Two athletes starting from same place walk in the same direction at a rate of 8 km/hr and 6 km/hr. What time will they take to be 10 km apart ?  Choose the correct option: A) 10 hours B) 15 hours C) 5 hours D) 4 hours E) None of these
Explanation :   The relative speed of athletes = 8-6= 
<gadget id="calculator">8-6</gadget>
<output>2</output>
2 km/hr.   Distance between them= 10 km   Time=10/2= 
<gadget id="calculator">10/2</gadget>
<output>5</output>
5 hours   Answer : 5 hours
<result>C</result>
Two athletes starting from same place walk in the same direction at a rate of 8 km/hr and 6 km/hr. What time will they take to be 10 km apart ?