The simple interest in 20 years is Rs. 3200. What is the S.I., if the initial principal
amount is increased by 12%, 15% and 20% respectively after every 5 years
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Answer:
For rate 12%
= p × r × t / 100
= 3200 × 12 × 5 / 100
= 1920
amount = p + s.i
= 3200 + 1920
= 5120 ans ....
For rate 15%
= p × r × t / 100
= 3200 × 15 × 5 / 100
= 2625
Amount = p + s.i
= 3200 + 2625
= 5825 ans....
For rate 20%
= p × r × t / 100
= 3200 × 20 × 5 / 100
= 3200
Amount = p + s.i
= 3200 + 3200
= 6400 ans ...
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