How to do mass balance if crude A = 15, 24.8, 40.1, and 20.1 and Crude B = 15,25.1,40.1,and 19.8 with crude price of 2.05$/kg and 2.07$/kg respectively. ALSO, with respective cut A = 18,24,42,and 16, cut B= 15,10,54,and 21 with prices 3.82$/kg and 3.61$/kg respectively