What will come in place of the question mark (?) in the following equation if ‘+’ and ‘-‘ are interchanged and ‘÷’ and ‘×’ are interchanged?
15 ÷ 8 - 16 × 4 + 9 = ?

Given: 15 ÷ 8 - 16 × 4 + 9 = ?

Given equation is solve by BODMAS rule.

​$$\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\ \hline \text{Addition} & + \\ \hline \text{Subtraction} & - \\\hline\end{array}$$

New equation: 15 × 8 + 16 ÷ 4 - 9 = ?

15 × 8 + 4 - 9 = ?

120 + 4 - 9 = ?

124 - 9 = ?

? = 115

Thus, correct option is (c).