Final answer:
To transport 20 cords of wood using a pickup truck that can carry 5/4 cord per trip, Tristan would need to make a total of 16 trips.
Step-by-step explanation:
Tristan's pickup truck can carry 5/4 cord of firewood in one trip. To determine the number of trips required to carry 20 cords of wood, we need to divide the total amount of wood by the capacity of the truck.
Here's the calculation:
Number of trips = Total cords of wood / Capacity of truck per trip
Number of trips = 20 cords / (5/4 cords per trip)
Number of trips = 20 * 4/5
Number of trips = 16
Therefore, it will take Tristan 16 trips with his pickup truck to carry 20 cords of wood.