A farmer travelled a distance of 61 km in 9 hours. He travelled partly on foot @ 4 km/hr and partly on bicycle @ 9 km/hr. The distance travelled on foot is:
14 km
15 km
16 km
17 km
Explanation:
Let the distance travelled on foot be x km.
Then, distance travelled on bicycle = (61 -x) km.
So,$\dfrac{x}{4}+\dfrac{61-x}{9}=9$
=> 9x + 4(61 -x) = 9 x 36
=>5x = 80
=> x = 16 km.
Let the distance travelled on foot be x km.
Then, distance travelled on bicycle = (61 -x) km.
So,$\dfrac{x}{4}+\dfrac{61-x}{9}=9$
=> 9x + 4(61 -x) = 9 x 36
=>5x = 80
=> x = 16 km.