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

Q: Problem: a worker is paid a regular rate of rs . 10 for completing a survey . the worker completes 50 surveys per week . for any survey involving the use of her cellphone , she is paid at a rate of that is 30 % higher than her regular rate . if she completed 35 surveys involving the use of her cellphone , how much did she get that week ?

A: 605
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Q: Problem: if 5 % more is gained by selling an article for rs . 360 than by selling it for rs . 340 , the cost of the article is ?

A: 400
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Q: Problem: the sub - duplicate ratio of 25 : 49 is

A:
5 : 7
****