The compensation of a selling agent is made up of a defined monthly pay as well as a fixed percentage of each sale the agent makes. He made 26,272 in sales during the first four months of 2011 and was paid ₹5,284 in total compensation. For the remainder of the year, he made sales of ₹ 43,008 and was paid a total of ₹ 9,376. Determine his monthly compensation as well as the commission percentage. [Answer Limit: 250 words] [UKPSC 2012]