The task is to generate the correct answer for a given math problem.
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Question: Problem: 20 is subtracted from 80 % of a number , the result is 60 . find the number ?

Answer: 100


Question: Problem: mary can do a piece of work in 26 days . rosy is 30 % more efficient than mary . the number of days taken by rosy to do the same piece of work is ?

Answer: 20


Question: Problem: the average wages of a worker during a fortnight comprising 15 consecutive working days was $ 90 per day . during the first 7 days , his average wages was $ 87 per day and the average wages during the last 7 days was $ 91 per day . what was his wage on the 8 th day ?

Answer:
$ 10