A water tank has two holes. The 1st hole alone empties the tank in 9 minutes and 2nd hole alone empties the tank in 6 minutes. If water leaks out at a constant rate, how many minutes does it take if both the holes together empty the tank?
3 \( \frac{3}{5} \)
\( \frac{3}{5} \)
3 \( \frac{1}{5} \)
3\( \frac{2}{5} \)
A woman invests Rs. 2,000 at the start of each year at 5% compound interest per annum. How much will her investments be at the end of the 2nd year?