Question

) A car started from a place at a speed of 30 kom/h. After 1 hour another car started from the same place at at a speed of 45 km/h. After how much tome will the second car meet the first car-​

Answer 1

Average speed =

totaltime

totaldistance

The distance covered=30×

2

1

+25×1+40×2

=120km

Time taken=0.5+1+2=3.5h

Hence,

Average speed=

3.5

120

=34.286km/h