There is 100% increase to an amount in 8 yr, at simple interest. Find the compound interest of ₹ 8000 after 2 yr at the same rate of interest.

• ₹ 2500

• ₹ 2000

• ₹ 2250

• ₹ 2125

The compound interest earned in two years at 12% per annum is ₹ 10,176/-. What is the sum (in ₹) invested?

• ₹ 50,000/-

• ₹ 60,000/-

• ₹ 40,000/-

• ₹ 80,000/-

The simple and compound interest that can be earned in two years at the same rate is ₹ 4,000/- and ₹ 4,180/- respectively. What is the rate(% per annum) of interest?

• 18% per annum

• 4.5% per annum

• 9% per annum

• 12% per annum