1. First, find out the total cost of the installation:
• We know that the cost of the stuff for skateboards is $132.49 and the total cost is $192.49.
• To find the total cost of the installation, we subtract the cost of the stuff from the total cost. Let C be the total cost of the installation. Then C = 192.49 - 132.49.
• C=60 dollars.
2. Then, find the number of skateboards repaired:
• The shop charges $15 per board to install them. Let n be the number of skateboards.
• We know that the total cost of installation C is related to the cost per board 15 and the number of skateboards n by the equation C = 15n.
• Since C = 60, we can solve for n by dividing both sides of the equation 15n=60 by 15.
• n=\frac{60}{15}=4.
So, 4 skateboards will be repaired.
