Three partners P, Q and R run a business with investments of RS. 30,000, Rs. 40,000, and Rs. 50,000 respectively. P stays for the entire year. Q leaves the business after two months but rejoins after another 4 months but with only 3/4th of his initial capital. R leaves after 3 months and rejoins after another 5 months but with only 4/5th of initial capital. If at the end of the year, the total profit is Rs. 27,900 then how much did R get more than Q in the profit?