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Solve left( frac 0 05 0 25 + frac 0 25...

This question belongs to Arithmetic Ability Decimal Fraction
Decimal Fraction
?

Solve : $${\left( {\frac{{0.05}}{{0.25}} + \frac{{0.25}}{{0.05}}} \right)^3} =\, ?$$

Answer & Solution
Correct Answer: Option C
$$\eqalign{ & {\left( {\frac{{0.05}}{{0.25}} + \frac{{0.25}}{{0.05}}} \right)^3} \cr & = {\left( {\frac{5}{{25}} + \frac{{25}}{5}} \right)^3} \cr & = {\left( {\frac{1}{5} + 5} \right)^3} \cr & = {\left( {\frac{{26}}{5}} \right)^3} \cr & = {\left( {5.2} \right)^3} \cr & = 140.608 \approx 140.6 \cr} $$
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