The task is to generate the correct answer for a given math problem.

Q: Problem: gopi gives rs . 90 plus one turban as salary to his servant for one year . the servant leaves after 9 months and receives rs . 60 and the turban . find the price of the turban .

A: 30
****
Q: Problem: the radius of the wheel of a bus is 100 cms and the speed of the bus is 66 km / h , then the r . p . m . ( revolutions per minutes ) of the wheel is

A: 175
****
Q: Problem: a train 100 meters long completely crosses a 300 meters long bridge in 36 seconds . what is the speed of the train is ?

A:
40 kmp
****