David pays an interest of ₹800 for 4 years on a sum of ₹2500. Find the rate of interest per annum.
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- We know that te formula of rate =Interest×100 Upon principal×Time
- Than we will put on this formula
- 800×100÷2500×4=8% will be the answer
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Answer:
R=100×I
-------
P×T
100×800/2500×4
8%per annum
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