Answer:[tex]10000[/tex]
Step-by-step explanation:
Let price of one camera is [tex]=x[/tex]
Price of 3 cameras[tex]=3x[/tex]
Total loss[tex]=5\%[/tex]
Hence The selling price[tex]=(1-0.05)\times3x[/tex]
[tex]0.95\times 3x=28500\\\\x=\frac{28500}{0.95\times3}\\\\x=10000[/tex]