A plane left later than the scheduled time and in order to reach the destination, away in time. It has to increase the speed by from the usual seed. Find the usual speed?
Given,
Distance covered by the plane
Let the usual speed be
Let the usual time taken be
we know,
Distance Speed time
Now,
The plane left late and reached on time
Time taken in this instance
Speed increased
Speed in this instance
From
On substituting
We get,
On multiplying the above equation. we get,
Speed cannot be negative.
Hence, the speed of the plane