Interest obtained on a sum of Rs. 5000 for 3 years is Rs. 1500. Find the rate percent.
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.
What is the difference between the simple interest on a principal of Rs. 500 being calculated at 5% per annum for 3 years and 4% per annum for 4 years?
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