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

[Q]: Problem: the diameter of the driving wheel of a bus in 140 cm . how many revolutions per minute must the wheel make in order to keep a speed of 33 kmph ?
[A]: 125


[Q]: Problem: 10 ^ ( 600 ) ã · 10 ^ ( 580 ) = ?
[A]: 10 ^ 20


[Q]: Problem: a and b are 90 km apart they start to move each other simultaneously a at speed 10 and b at 5 km / hr if every hour they double their speed what is distance that a pass until he meet b ?
[A]:
60 km