Let x be the speed of the cargo car. Then x+32 is the speed of the light car. The distance covered by the cargo car is (x+32)*3. The distance covered by the light car is x*5. According to the problem, the distances are equal. Formulate the equation and find the speed of the cargo car.

Solution:

• Let x be the speed of the cargo car (in km/h).
• Then the speed of the light car is (x + 32) km/h.
• The distance covered by the cargo car is 5x km.
• The distance covered by the light car is 3(x + 32) km.
• According to the condition, the distances are equal: 5x = 3(x + 32)
• Now, we solve the equation:
• 5x = 3x + 96
• 5x - 3x = 96
• 2x = 96
• x = 96 / 2
• x = 48

Final Answer:

The speed of the cargo car is 48 km/h.