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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