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

[Q]: Problem: after decreasing 24 % in the price of an article costs rs . 684 . find the actual cost of an article ?
[A]: 900


[Q]: Problem: the distance between a & b is 1540 km . a person is traveling from a to b at 100 km / hr started at 6 am and another person is traveling from b to a at 120 km / hr and started at same time . then at what time they meet together .
[A]: 1 pm


[Q]: Problem: 4 friends are pooling their money for pizza . emma has 8 dollars . daya has 25 % more money than emma , jeff has 2 / 5 of the money daya has , and brenda has 4 more dollars than jeff . how much money does brenda have ?
[A]:
8