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How much greater is 3.1*10^-2 than 2.5*10^-3

How much greater is 3.1*10^-2 than 2.5*10^-3
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How much greater is 3.1*10^-2 than 2.5*10^-3

User Andrei Ashikhmin
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\cfrac{3.1* 10^(-2)}{2.5* 10^(-3)}\implies \cfrac{3.1}{2.5}* \cfrac{10^(-2)}{10^(-3)}\implies 1.24 * 10^(-2)* 10^3 \\\\\\ 1.24* 10^(-2+3)\implies 1.24* 10^1\implies 12.4\qquad \textit{times greater}

User JimmyPena
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