यदि A, B को ₹6800 साधारण ब्याज पर 6% प्रति वर्ष की दर से उधार देता है और B वही राशि C को साधारण ब्याज पर 10% प्रति वर्ष की दर से उधार देता है, तो 2 वर्ष की अवधि में B का कुल लाभ ज्ञात कीजिए।

The difference between simple interest and compound interest (compounded half-yearly) on a sum at the rate of 25% per annum for 1 year is ₹ 4,375. What is the principal amount?

A person invested half of his capital at 10% simple interest and the other half at 10% compound interest (compounded annually) for 2 years. If the total interest earned is ₹ 4,100, find his total capital.