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671 . Find the rate of interest if the amount after 2 years of simple interest on a capital of Rs. 1200 is Rs. 1440.
A. 8% B. 9%
C. 10% D. 11%

672 . 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?
A. Rs. 5 B. Rs. 10
C. Rs. 20 D. Rs. 40

673 . 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?
A. Rs. 269.5 B. Rs. 283
C. Rs. 273 D. Rs. 280

674 . Find the compound interest on Rs. 1000 at the rate of 20% per annum for 18 month when interest is compounded half yearly.
A. Rs. 331 B. Rs. 1331
C. Rs. 320 D. Rs. 325

675 . Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420.
A. Rs. 1000 B. Rs. 2200
C. Rs. 2000 D. Rs. 1100




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