( 11.4 + 14.7 + 17.10 + 110.13 + 113.16 ) is equal to = ?

Answer: Option B

$$\left(\frac{1}{1.4}+\frac{1}{4.7}+\frac{1}{7.10}+\frac{1}{10.13}+\frac{1}{13.16}\right)$$
Formula :
$$\frac{1}{\text{Difference denominator value}}\times$$     $$\left[\frac{1}{\text{First value}}-\frac{1}{\text{Last value}}\right]$$
$$=\frac{1}{3}\times$$ $$\left[1-\frac{1}{4}+\frac{1}{4}-\frac{1}{7}+\frac{1}{7}-\frac{1}{10}+\frac{1}{10}-\frac{1}{13}+\frac{1}{13}-\frac{1}{16}\right]$$
$$\begin{array}{rl}& =\frac{1}{3}\times \left[1-\frac{1}{16}\right]\\ & =\frac{1}{3}\times \frac{15}{16}\\ & =\frac{5}{16}\end{array}$$