#$7$ additional probs, ACG $,$ VR&R Tax Service offers tax and consulting services to individuals and small businesses. Data for fees and costs for three types of tax

returns follow. Fixed costs total $$91,840.$

$(1)$ Determine the weighted$-$average contribution margin.

Weighted$-$average contribution margin

$(2)$ Determine the break$-$even point in units using the weighted$-$average contribution margin.