A man travelled a distance of 80 km in 7 hours partly on foot at the rate of 8 km per hour and partly on bicycle at 16 km per hour. Find the distance travelled on foot.
Choose the correct choice:
A) 26 km B) 32 km C) 30 km D) 28 km E) None
Total Time = 7hrs   Let the distance travelled by foot @ 8kmph be x kms   ? distance travlled by bicycle @ 16kmph be (80-x)kms   ATQ. 7hr = x/8 + (80-x)/16   ? 7 = (2x + 80 - x)/16   ? x = 32kms   Answer: 32 km.
<result>B</result>
A man travelled a distance of 80 km in 7 hours partly on foot at the rate of 8 km per hour and partly on bicycle at 16 km per hour. Find the distance travelled on foot.