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The strangth of class decreased every …

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The strangth of class decreased every year at 10%. If strangth of class was 70000 2 year ago . Find present strangth.

Posted by Rathi Kajal 8 years, 10 months ago

Naveen Sharma 8 years, 10 months ago

Ans. Strength of class 2 years ago = 70000

Decreasing rate = 10%

Strength after 1 year = {tex}70000 - {70000\times 10\over 100} = 70000-7000{/tex}

= 63000

Present Strength = {tex}63000-{63000\times 10\over 100} = 63000-6300{/tex}

=56700

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