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Prem has deposited some mony in a bank 4...

Prem has deposited some mony in a bank `4%` per annum. The bank increases the interest rate by `1%` p.a. and Prem deposits an additional `₹3000` in his account. The annual interest he receives at the year end is `₹220` more that what he would have received if the bank had not increased the interest rate and had not deposited additional amount. Find the original deposite.

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₹ 7000
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