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

[Q]: Problem: p , q and r together earn rs . 1710 in 9 days . p and r can earn rs . 600 in 5 days . q and r in 7 days can earn rs . 910 . how much amount does r can earn per day ?
[A]: s . 60

[Q]: Problem: if x and j are integers and 2 x j = 11 , then 4 x + j can not be
[A]: 17

[Q]: Problem: if 15 % of 30 % of 50 % of a number is 108 , then what is the number ?
[A]:
4800