Goodwill of the firm was valued at ₹6,00,000 being valued at 3 years…

NCERT (2026-27 edition):
Methods of Valuation of Goodwill – “… Suppose an existing firm earns Rs. 18,000 on the capital of Rs. 1,50,000 and the normal rate of return is 10%. The Normal profits will work out at Rs. 15,000 (1,50,000 × 10/100). The super profits in this case will be Rs. 3,000 (Rs. 18,000 – 15,000). The goodwill under the super profit method is ascertained by multiplying the super profits by certain number of years’ purchase. If, in the above example, it is expected that the benefit of super profits is likely to be available for 5 years in future, the goodwill will be valued at Rs. 15,000 (3,000 × 5).”