Answer:
$159.95
Step-by-step explanation:
Let price of trumphet be defined by [tex]x[/tex]
price of clarinet = $139.95
Number of clarinets sold = 19
Earning through clarinets' sale = [tex]19*139.95 = 2659.05[/tex]
Total earning of store = $4578.45
Earning through trumphets' sale = [tex]4578.45 - 2659.05 = 1919.40[/tex]
price of one trumohet = [tex]\frac{1919.40}{12} = 159.95[/tex]
price of clarinet = $159.95