Question
A sum of 10,500 amounts to 13,825 in 3.8 years at a certain rate percent per annum simple interest. What will be the simple interest on the same sum for 5 years at double the earlier rate?
Solution
Principal (P) = ₹10,500 Final Amount (A) = ₹13,825 Time (T) = 3.8 years Simple Interest (SI) = A−P=13,825−10,500=3,325.
to find the Rate (R): Using the formula:
Substitute values:
Double the Rate :
Calculate SI for 5 Years at Double the Rate : Using the formula:
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