A Man travelled a distance of 61 km in 9 hours. He travelled partly on foot at 4 km/hr and partly on
bicycle at 9 km/hr. What is the distance travelled on foot?  Pick: A) 16 km B) 14 km C) 12 km D) 10 km E) None of these
Explanation:   Let the time in which he travelled on foot = x hour   Time for travelling on bicycle = (9 - x) hr   Distance = Speed * Time, and Total distance = 61 km   So,   4x + 9(9-x) = 61   =&gt; 5x = 20   =&gt; x = 4   So distance traveled on foot = 4(4) = 16 km   16 kmnswer: Option 16 km
<result>A</result>
A Man travelled a distance of 61 km in 9 hours. He travelled partly on foot at 4 km/hr and partly on
bicycle at 9 km/hr. What is the distance travelled on foot?