A Person covers half of his journey by
train at 60 km/h ,half of the remaining by bus 30km/h and the rest by cycle at 10km/h Find his average speed during the entire journey.with explanation
Answers
Answered by
1
let the distance traveled by train,bus and cycle be d' , d" , d"'
total distance(D) = d' + d" + d"'
=D
t'= d'/60
t"= d"/30
t"'= d"'/10
total time = t'+t"+t"'
= d'/60 + d"/30 +d"'/10
=9D/60
avg. speed = total distance/total time
=D÷ 9D/60
=60D /9D
=6.67 km/h [approximate]
ANS= 6.67 km/h
Similar questions