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

[Q]: Problem: on a certain road , 10 % of the motorists exceed the posted speed limit and receive speeding tickets , but 20 % of the motorists who exceed the posted speed limit do not receive speeding tickets . what percent of the motorists on that road exceed the posted speed limit ?
[A]: 12.5 %


[Q]: Problem: find the least number must be subtracted from 105829 so that remaining no . is divisible by 21 ?
[A]: 10


[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 14 kmph ?
[A]:
53.03