Question 187490
Well, you're off to a good start!
You have x = total sales and you want to find when B > E, so...
0.08x+10 > 0.05x+20 Subtract 0.05x from both sides.
0.03x+10 > 20 Now subtract 10 from both sides.
0.03x > 10 Finally, divide both sides by 0.03
x > 333.3
The answer is when total sales (x) exceed 333.3