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


[Q]: Problem: the area of a triangle is with base 10 m and height 5 m ?
[A]: 25


[Q]: Problem: the sub - duplicate ratio of 16 : 64 is
[A]:
2 :