Math, asked by ravi7782, 11 months ago

Malti has deposited certain sum in a bank at 3.5% per annum. The bank announces an increase in the interest rate by 1.5% p.a. Malti deposits an additional 3 2500 in the bank. The annual interest that Malti receives now is 3 221 more than what she would have got earlier. Find the original deposit.

Answer (6,400)​

Answers

Answered by amitnrw
2

Original deposit  = Rs 6400 if interest rate increased from 3.5% to 5% & 2500 deposited additionally & interest earned rs 221 more

Step-by-step explanation:

Let say initial Amount = 1000X  Rs

Interest rate increased by 1.5% per annum

Extra interest earned on X  =  1000X * 1.5 * 1 /100  = 15X Rs

Interest Rate = 3.5 + 1.5 = 5 %

Interest Earned on 2500 = 2500 * 5 * 1/100 = 125 Rs

15X + 125  = 221

=> 15X = 96

=> X = 96/15

=> 1000X  = 1000 * 96/15  = 6400

original deposit  = Rs 6400

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