What is the difference between the compound interest and

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What is the difference between the compound interest and simple interest calculated on an amount of ₹ 16200 at the end of 3 yr at 25% pa? (Rounded off to two digits after decimal)

1. ₹ 3213.44
2. ₹ 3302.42
3. ₹ 3495.28
4. ₹ 3290.63

Correct Option: D

Let required difference be ₹ D.
By formula,
D = P x (R/100)² x [(3 + R)/100]
= 16200 x (25/100)² x [(3 + 25)/100]
= 16200 x 625/10000 x 13/4
= 162 x 625 x 13/4 x 100 = ₹ 3290.63