Question

A car covers 40 km in first hour, 115 km in next two hours and 45 km in next one hours. Find out

Answer 1

Answer:

40 km/hr

Explanation:

$avg. speed= \frac{tot.disp}{tot.time} \\\\avg. speed = \frac{115+40+45}{1+2+1} km/hr\\\\avg.speed = \frac{200}{5} = 40 km/hr$

Answer 2

Answer:

40 km/hr\end{gathered}

avg.speed=

tot.time

tot.disp

avg.speed=

1+2+1

115+40+45

km/hr

avg.speed=

5

200

=40km/hr