The difference between the compound interest (compounding half yearly) for 1 year and the simple interest for 1 year on a certain sum lent out at the annual rate of 10 percent is Rs. 305. What is the sum?
A alone can complete a work in \( \frac{20}{3} \) days. A and B together can complete it in 5 days. How long will B alone take to complete the work?
A person lent certain sum of money at the annual rate of 15 percent on simple interest and the interest received in 6 years is Rs. 800 less than the sum lent. What is the sum lent?