Rs. 2100 is lent at compound interest of 5% per annum for 2 years. Find the amount after two years.
Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420.
Find the compound interest on Rs. 1000 at the rate of 20% per annum for 18 month when interest is compounded half yearly.
Interest obtained on a sum of Rs. 5000 for 3 years is Rs. 1500. Find the rate percent.
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