We are given that equipment was undervalued by ₹ 90,000 at the time of Raghu's admission. After revaluation, the equipment is shown at ₹ 3,00,000 in the new balance sheet. We need to find the book value before revaluation.
Step 1: Understand the meaning of "undervalued by ₹ 90,000."
If an asset is undervalued, it means its book value is less than its actual/revalued value. The difference of ₹ 90,000 is the amount of undervaluation.
Step 2: Set up the relationship.
Let the book value before revaluation = \( x \)
Undervaluation = ₹ 90,000
Revalued value = Book value + Undervaluation
Given that after revaluation, the equipment is shown at ₹ 3,00,000:
\[
x + 90,000 = 3,00,000
\]
Step 3: Solve for \( x \).
\[
x = 3,00,000 - 90,000
\]
\[
x = 2,10,000
\]
Step 4: Verify.
Book value before admission = ₹ 2,10,000
Undervaluation = ₹ 90,000
Revalued value = ₹ 2,10,000 + ₹ 90,000 = ₹ 3,00,000 ✓
Final Answer: (B) ₹ 2,10,000