A started business with ₹7000 and after 5 months, B joined as a partner. After a year the profit is divided into the ratios 2:3. The capital of B is: A একটি ব্যবসা ₹7000 দিয়ে শুরু করল এবং 5 মাস পরে B অংশীদার হিসেবে যোগ দিল। এক বছর পরে লাভের অনুপাত 2 : 3 হলে, B-এর মূলধন কত?

A invests ₹7000 for 12 months.
B joins after 5 months ⇒ B invests for 7 months.

Profit sharing ratio = 2 : 3 (A : B)

Profit ratio ∝ Capital × Time

So,
\( 7000 \times 12 : B \times 7 = 2 : 3 \)

\( \frac{7000 \times 12}{7B} = \frac{2}{3} \)

Cross multiply:
\( 7000 \times 12 \times 3 = 2 \times 7B \)
\( 252000 = 14B \)
\( B = 18000 \)

Capital of B = ₹18000
Correct Answer: Option C (₹18000)