Question

A farmer travelled a distance of 61 km
in 9 hours. He travelled partly on foot
@ 4 km/hr and partly bicycle
@ 9 km/hr. The distance travelled on
foot is
on
(A) 14 km
(B) 15 km​

Answer 1

Let the distance travelled on foot be x km.

Then, distance travelled on bicycle = (61 -x) km.

So,

4

x

+

9

(61−x)

=9

⇒ 9x + 4(61 -x) = 9 × 36

⇒ 5x = 80

→x = 16 km.