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

[EX Q]: Problem: if 32.5 % of the 880 students at a certain college are enrolled in biology classes , how many students at the college are not enrolled in a biology class ?
[EX A]: 594

[EX Q]: Problem: one fast typist type some matter in 4 hrs and another slow typist type the same matter in 6 hrs . if both do combine in how much time they will take to finish .
[EX A]: 2 hr 24 mins

[EX Q]: Problem: the probability of two events a and b are 0.25 and 0.40 respectively . the probability that both a and b occur is 0.20 . the probability that neither a nor b occur is _________
[EX A]:
0.55