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

[EX Q]: Problem: in a village of 2,500 people , 800 people are over 70 years old and 850 people are female . it is known that 40 percent of the females are younger than 70 years old . if no one in the village is 70 years old , what is the probability that a person chosen at random is either a male or younger than 70 years old ?
[EX A]: 199 / 250

[EX Q]: Problem: the owner of a furniture shop charges his customer 25 % more than the cost price . if a customer paid rs . 1000 for a computer table , then what was the cost price of the computer table ?
[EX A]: 80

[EX Q]: Problem: the present worth of rs . 845 due in 2 years at 4 % per annum compound interest is
[EX A]:
rs . 781.25