Question

A farmer travelled a distance of 61 km in 9 hrs . He travelled partly on foot at the rate of 4 km/hr and partly on bicycle at the rate of 9 km/hr . The distance travelled on foot is
A. 17 km
B. 16 km
C. 15 km
D. 14 km

Answer 1

Correct Answer - B
Let the distance travelled as foot be x km .
Then , distance travelled by bicycle = (61-x) km
So , `(x)/(4) + (61- x)/(9) = 9`
9x + 4 (61-x) = 9 `xx 36`
`9x - 4x = 324 - 244`
5 x = 80
x = 16 km