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

[EX Q]: Problem: a train 140 m long is running at 60 kmph . in how much time wiu it pass a platform 260 m long ?
[EX A]: 24 sec

[EX Q]: Problem: a rectangle having length 105 cm and width 40 cm . if the length of the rectangle is increased by twenty five percent then how much percent the breadth should be decreased so as to maintain the same area .
[EX A]: 19.23 %

[EX Q]: Problem: an employee ' s annual salary was increased $ 5000 . if her new annual salary now equals $ 25000 what was the percent increase ?
[EX A]:
80 %