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

A. 139.4

B. 140

C. 140.6

D. 143.6

Answer: Option C

Solution(By Examveda Team)

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