A Man travelled a distance of 70 km in 9 hours. He travelled partly on foot at 6 km/hr and partly on bicycle at 9 km/hr. What is the distance travelled on foot?
Select the correct option.
A) 16 km B) 14 km C) 12 km D) 42 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   42 kmistance = Speed * Time, and Total distance = 70 km   So,   6x + 9(9-x) = 70   =&gt; 3x = 21   =&gt; x = 7   So distance traveled on foot = 6(7) = 42 km   Answer: Option 42 km
<result>D</result>
A Man travelled a distance of 70 km in 9 hours. He travelled partly on foot at 6 km/hr and partly on bicycle at 9 km/hr. What is the distance travelled on foot?