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

[EX Q]: Problem: ajay can ride 50 km in 1 hour . in how many hours he can ride 1000 km ?
[EX A]: 20 hrs

[EX Q]: Problem: harold works at a resort from the beginning of march to the end of september . during the month of august this past year , he made 2 times the average ( arithmetic mean ) of his monthly totals in tips for the other months . his total tips for august were what fraction of his total tips for all of the months he worked ?
[EX A]: 1 / 4

[EX Q]: Problem: in a certain corporation , there are 300 male employees and 150 female employees . it is known that 30 % of the male employees have advanced degrees and 40 % of the females have advanced degrees . if one of the 450 employees is chosen at random , what is the probability this employee has an advanced degree or is female ?
[EX A]:
8 / 15