Final answer:
On Saturday, 180 vehicles visited Lana's Car Wash, the number of trucks visiting Lana's Car Wash on Saturday was 45.
Step-by-step explanation:
To find the number of trucks visiting Lana's Car Wash on Saturday, we need to first determine how many vehicles out of the total were cars and how many were trucks.
We are given that 3 out of every 4 vehicles were cars, which means that 1 out of every 4 vehicles was a truck.
To calculate the number of trucks, we can use the formula: Trucks = Total vehicles * (1/4).
In this case, the total number of vehicles visited Lana's Car Wash on Saturday is 180.
Therefore, the number of trucks visiting Lana's Car Wash on Saturday is: Trucks = 180 * (1/4) = 45.