Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: by selling 11 pencils for a rupee a man loses 30 % . how many for a rupee should he sell in order to gain 30 % ?
11
15.71 (rounded to two decimal places)