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Question

A container contains 40 liters of milk. From this container 4 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?

29.16 liters

27.36 liters

29 liters

26.34 liters

ANSWER : 1

Descrption

<pre>
Shortcut: 
<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>.</mo><mo>'</mo><mo>.</mo><mo>&#xA0;</mo><mi>x</mi><mo>(</mo><mn>1</mn><mo> - </mo><mfrac><mi>y</mi><mi>x</mi></mfrac><msup><mo>)</mo><mi>n</mi></msup><mspace linebreak = "newline"/><mo> = </mo><mn>40</mn><mo>(</mo><mn>1</mn><mo> - </mo><mfrac><mn>4</mn><mn>40</mn></mfrac><msup><mo>)</mo><mn>3</mn></msup><mspace linebreak = "newline"/><mo> = </mo><mn>40</mn><mo>(</mo><mfrac><mrow><mn>40</mn><mo> - </mo><mn>4</mn></mrow><mn>40</mn></mfrac><msup><mo>)</mo><mn>3</mn></msup><mspace linebreak = "newline"/><mo> = </mo><mn>40</mn><mo>(</mo><mfrac><mn>36</mn><mn>40</mn></mfrac><msup><mo>)</mo><mn>3</mn></msup><mspace linebreak = "newline"/><mo> = </mo><mn>40</mn><mo>(</mo><mfrac><mn>9</mn><mn>10</mn></mfrac><msup><mo>)</mo><mn>3</mn></msup><mspace linebreak = "newline"/><mo> = </mo><mn>40</mn><mo>&#xD7;</mo><mfrac><mrow><mn>9</mn><mo>&#xD7;</mo><mn>9</mn><mo>&#xD7;</mo><mn>9</mn></mrow><mrow><mn>10</mn><mo>&#xD7;</mo><mn>10</mn><mo>&#xD7;</mo><mn>10</mn></mrow></mfrac><mspace linebreak = "newline"/><mo> = </mo><mn>29</mn><mo>.</mo><mn>16</mn><mo>&#xA0;</mo><mi>l</mi><mi>i</mi><mi>t</mi><mi>e</mi><mi>r</mi><mi>s</mi><mo>&#xA0;</mo></math>
</pre>

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