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

Problem: find the value of x : 2 x ² − 4 .
- 2,2

Problem: a van takes 5 hours to cover a distance of 495 km . what speed in kph should the van maintain to cover the same distance in 3 / 2 of the previous time ?
66

Problem: the salary of a person was reduced by 25 % . by what percent should his reduced salary be raised so as to bring it at par with his original salary ?

33.33 %