we need to calculate $$\frac{(0.05)^2 + (0.41)^2 + (0.073)^2}{(0.005)^2 + (0.041)^2 + (0.0073)^2}$$
here we know
0.005 = 0.05/10
0.041 = 0.41/10
0.0073 = 0.073/10
hence , $$\frac{(0.05)^2 + (0.41)^2 + (0.073)^2}{((0.05)/10)^2 + ((0.41)/10)^2 + ((0.073)/10)^2}$$ = 100
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