Let's examine the equations for Dealership A and Dealership B more closely:
a) For Dealership A: Let \( x \) be the number of cars and \( y \) be the number of trucks. The total number of cars and trucks sold at Dealership A is given as 164. Thus, the equation is indeed: \[ x + y = 164 \]
b) For Dealership B: You noted that Dealership B sells twice as many cars and half as many trucks as Dealership A. This means:
- The number of cars sold at Dealership B is \( 2x \).
- The number of trucks sold at Dealership B is \( \frac{1}{2}y \).
The total number of cars and trucks sold at Dealership B is given as 229. Therefore, the correct equation for Dealership B should be: \[ 2x + \frac{1}{2}y = 229 \]
So, the correct equations are:
- For Dealership A: \( x + y = 164 \)
- For Dealership B: \( 2x + \frac{1}{2}y = 229 \)
Your equation for Dealership B was incorrect. It should have been \( 2x + \frac{1}{2}y = 229 \) instead of \( \frac{1}{2}x + \frac{1}{2}y = 229 \).