Final answer:
To find the number of trucks sold last year, use the equation 216,000 = 3t + 39,000 and solve for t which is 59,000
Step-by-step explanation:
To find the number of trucks sold last year, we can use the given information.
Let's define the number of trucks sold as t.
According to the problem, the number of cars sold last year was 39000 more than three times the number of trucks sold. We are also given that 216,000 cars were sold. Based on this, we can write the equation:
216,000 = 3t + 39,000
To solve for t, we can subtract 39,000 from both sides of the equation:
216,000 - 39,000 = 3t
177,000 = 3t
Finally, divide both sides of the equation by 3 to solve for t:
t = 59,000