Answer: 3.91
Explanation: We can calculate operating leverage by using following formula:-
[tex]operating\:leverage=\frac{contribution}{net\:income}[/tex]
where,
contribution = sales - variable cost
= sales - ( variable cost of goods sold + supplies )
= $52,260 - ( $26,260 + $5460)
= $20,540
Now, putting the values into equation we get :-
[tex]operating\:leverage=\frac{20,540}{5,240}[/tex]
= 3.91