c) ₹ 50,000
Given,
Capital of Ganga = ₹ 1,02,000
Capital of Jamuna = ₹ 73,000
Saraswati's share of goodwill = ₹ 25,000
Total capital of theirs = ₹ 2,00,000
Let the total share be 1.
Therefore, remaining share = 1 - 1/5
= 5 - 1/5
= 4/5
Reciprocal of 4/5 = 5/4
So,
Capital of Saraswati = 1/5 of Total capital ÷ Remaining share
= 1/5 × ₹ 2,00,000 ÷ 4/5
= 1/5 × ₹ 2,00,000 × 5/4
= ₹ 50,000