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

[EX Q]: Problem: if 2 men or 3 women can reap a field in 10 days how long will 4 men and 5 women take to reap it ?
[EX A]: 11 / 30

[EX Q]: Problem: find the value of x : 2 x ² − 4 .
[EX A]: - 2,2

[EX Q]: Problem: a shopkeeper buys mangoes at the rate of 7 a rupee and sells them at 5 a rupee . find his net profit or loss percent ?
[EX A]:
40 %