Costing query

from the following compute a conservative estimate of profit by 4 methods on a contract which hs 80% cmplt : total exps rs. 850000 estimate further exps rs.170000 cont price rs.1530000 work certified rs.1000000 work not certified rs.85000 cash recd rs.816000. I dnt wann detailed calculatin i jst wann to knw whethr th ans is a.)125333 or b.)272000??????????????? thank u.....