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The Classic Bank Riddle |

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In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will get doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?

1 Answer

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This is totally impossible in real because you do not pay in bank in fractions. However, the only possible answer is explained below:

YearAmountInterest and Deduction
Start63.984375
Y1 End62.968750 63.984375 * 2 - 65
Y2 End60.937500 62.96875* 2 - 65
Y3 End56.875000 60.9375 * 2 - 65
Y4 End48.750000 56.875 * 2 - 65
Y5 End32.500000 48.75 * 2 - 65
Y6 End0.000000 32.5 * 2 - 65 = 0

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