On 1st April, 2025, an existing firm had assets of ₹75,000 including cash of ₹5,000. Its creditors amounted to ₹5,000 on that date. The firm had a Reserve of ₹10,000 while Partners’ Capital Accounts showed a balance of ₹60,000. If Normal Rate of Return is 20% and goodwill of the firm is valued at ₹24,000 at four years’ purchase of super profit, find average profit per year of the existing firm.