Question

A tourist covers half of his journey by train at 60 km/h, half of the remaining by bus at 30 km/h and the rest by cycle at 10 km/h. The average speed of the tourist in km/h during his entire journey is

• A.
  36
• B.
  30
• C.
  24
• D.
  18

Answer 1

The correct option is C

24
$Averagespeed=\frac{Totaldistance}{Totaltime}\frac{D}{\frac{D/2}{60}+\frac{D/4}{30}+\frac{D/4}{10}}=24kmph$