Final answer:
To find out how many hours it will take for Truck B to have an equal amount of crates with Truck A, set up the equation 200 + 150t = 275t and solve for t. The answer is approximately 1 hour and 20 minutes.
Step-by-step explanation:
To find out how many hours it will take for Truck B to have an equal amount of crates with Truck A, we can set up an equation. Let t represent the number of hours. Since Truck A starts with 200 crates and puts in 150 crates per hour, the number of crates in Truck A after t hours can be represented by the equation 200 + 150t. On the other hand, Truck B starts with 0 crates and puts in 275 crates per hour, so the number of crates in Truck B after t hours can be represented by the equation 275t. Setting these two equations equal to each other, we have 200 + 150t = 275t. Solving this equation for t, we get t = 1.33 hours, or approximately 1 hour and 20 minutes.