What is the simple interest on a sum of Rs. 700 if the rate of interest for the first 3 years is 8% per annum and for the last 2 years is 7.5% per annum?
Find the rate of interest if the amount after 2 years of simple interest on a capital of Rs. 1200 is Rs. 1440.
Find the simple interest on Rs. 5200 for 2 years at 6% per annum.
Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420.
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