Chanki, Yash and Mayank enter into a partnership business. Chanki invested 8000 Rs. for the whole year, Yash invested 24000 Rs. first and after 3 month invested 3500 Rs. more and Mayank invested 26000

for first 9 months withdraw Rs 3500 after 9 months, if at the end of year Yash gets total profit of Rs. 12900, then find the sum of total profit of Chanki and Mayank.( in Rs. )