A man travelled a distance of 80 km in 7 hrs partly on foot at the rate of 8 km/hr and partly on bicycle at 16 km/hr. The distance travelled on the foot is :
A man travelled a distance of 80 km in 7 hrs partly on foot at the rate of 8 km/hr and partly on bicycle at 16 km/hr. The distance travelled on the foot is :
[A]32 km
[B]36 km
[C]44 km
[D]48 km
32 km
Journey on foot = x km
Journey on cycle = (80 – x) km
$latex \therefore \frac{x}{8}+\frac{80-x}{16} = 7&s=1$
$latex => \frac{2x+80-x}{16} = 7&s=1$
$latex => x+80=16\times 7 = 112$
$latex => x = 112-80 = 32km$
Hence option [A] is correct answer.