Find the LCM and HCF of 2.5, 0.5 and 0.175.

Answer: Option D

$$\begin{array}{rl}& 2.5=\frac{25}{10},\\ & 0.5=\frac{5}{10},\\ & 0.175=\frac{175}{1000},\end{array}$$
Now,
LCM of two or more fractions is given by:
$$\begin{array}{rl}& \frac{\text{LCM}\text{of}\text{Numerators}}{\text{HCF}\text{of}\text{Denominators}}\\ & \text{Thus,}\\ & \frac{\text{LCM}\text{of}25,5,175}{\text{HCF}\text{of}10,10,1000}\\ & =\frac{175}{10}\\ & =17.5\end{array}$$