The operating cost of a truck is 12+(x/6...

The operating cost of a truck is `12+(x/6)` per km when the truck travels x km/hour. If the driver earns 6 Rs. per hour, what is the most economical speed to operate the truck on a 400 km road? Also due to construction, the truck can travel only between 35 and 60 km/hour?

Similar Questions

Explore conceptually related problems

The speed of a truck is (1)/(3) rd the speed of a train . The train covers 1230 km is 5 hours . What is the speed of the truck ?

A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?

A loaded truck travels 14 km in 25 mintues. If the speed remains the same, how far can it travel in 5 hours?

A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?