A car covers 30km at a uniform speed of 30km/hr. What should be its speed for the next 90km. If the average speed for the entire journey is 60km/h
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let the speed for the next time be x.
therfore (30+x)/2=60
30+x=120
therefore x=120-30
therfore x=90 km/hr
Since average of 2 speeds wil be (speed1+speed2)/2
therfore (30+x)/2=60
30+x=120
therefore x=120-30
therfore x=90 km/hr
Since average of 2 speeds wil be (speed1+speed2)/2
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