Since, the profit is Rs.20 lakhs, it definitely can charge the remuneration to partners at Rs.3 lakhs or more...(refer sec.40b)
Upto Rs.3,00,000/- 90% i.e., 2,70,000/-
rest @ 60% i.e., 10,36,360/-
in total maximum remuneration of Rs.13,06,360/- can be charged.