The strangth of class decreased every …
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Rupender Singh 6 years, 11 months ago
Strength of class before 2 years = 70000
Decrease in strength in every year = 10%
So, Present strenth of class = {tex}70000\,{\left( {1\,\, - \,\,{{10} \over {100}}} \right)^2}\, = \,70000\,{\left( {{{100\, - \,10} \over {100}}} \right)^2}\, = \,70000\, \times \,{{90} \over {100}}\, \times \,{{90} \over {100}}\, = \,7\, \times \,90\, \times \,90\, = \,56700{/tex}
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