c$.$ A four$-$wheel tractor weights $40,000kg$ on the driving wheels and produces a maximum rimpull of $20,000kg$ at sea level. The tractor is being operated at an altitude of $2955m$ on wet earth. A pull of $15,000kg$ is perform to move the tractor and its operated at an altitude of $2955m$ on wet earth. A pull of $15,000kg$ is The max that required pull, what is the maximum speed?

$(5$ marks$)$

The maximum usable pull:

Can the tractor perform under these conditions?

The maximum speed is: