Two banks offer interest rate of 6% and 7% respectively on savings account. Mr. Faruq deposited a total amount of Tk. 4000 in the banks and in one year his interest income was Tk. 250. Find the deposit in the bank with 7% interest rate?

Two banks offer interest rate of 6% and 7% respectively on savings account. Mr. Faruq deposited a total amount of Tk. 4000 in the banks and in one year his interest income was Tk. 250. Find the deposit in the bank with 7% interest rate? Correct Answer 1000

<math xmlns = "http://www.w3.org/1998/Math/MathML"><mi>H</mi><mi>i</mi><mi>n</mi><mi>t</mi><mi>s</mi><mo>:</mo><mo>&#xA0;</mo><mtext>&#x9A7;&#x9B0;&#x9BF;,&#xA0;7%&#xA0;&#x9B8;&#x9C1;&#x9A6;&#x9C7;&#xA0;x&#xA0;&#x99F;&#x9BE;&#x995;&#x9BE;&#xA0;deposit&#xA0;&#x995;&#x9B0;&#x9C7;&#x964;</mtext><mspace linebreak = "newline"/><mi>x</mi><mo>&#xD7;</mo><mfrac><mn>7</mn><mn>100</mn></mfrac><mo>&#xD7;</mo><mn>1</mn><mo> + </mo><mfenced><mrow><mn>4000</mn><mo> - </mo><mi>x</mi></mrow></mfenced><mo>&#xD7;</mo><mfrac><mn>6</mn><mn>100</mn></mfrac><mo>&#xD7;</mo><mn>1</mn><mo> = </mo><mn>250</mn><mspace linebreak = "newline"/><mo>&#x21D2;</mo><mn>7</mn><mi>x</mi><mo> + </mo><mn>24000</mn><mo> - </mo><mn>6</mn><mi>x</mi><mo> = </mo><mn>25000</mn><mspace linebreak = "newline"/><mo>&#x21D2;</mo><mi>x</mi><mo> = </mo><mn>25000</mn><mo> - </mo><mn>24000</mn><mspace linebreak = "newline"/><mo>&#x2234;</mo><mo>&#xA0;</mo><mi>x</mi><mo> = </mo><mn>1000</mn></math>

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