6 cars, 10 trucks, 14 SUV, 15 minivans. If 150 vehicles passed Luann, how many more minivans than cars would you expect to pass her?

15/45 = x/150

45x = 2250
x = 50

6/45 = x/150
150 = x

To find out how many more minivans than cars would be expected to pass Luann, we need to calculate the difference between the number of minivans and the number of cars.

First, let's find the total number of vehicles: 6 cars + 10 trucks + 14 SUVs + 15 minivans = 45 vehicles.

Since we know that 150 vehicles passed Luann, we need to find the proportion of the total number of vehicles that the minivans represent.

The proportion of minivans is calculated by dividing the number of minivans by the total number of vehicles: 15 minivans / 45 vehicles = 1/3.

Now, we can find the number of minivans expected to pass Luann by multiplying the proportion of minivans by the total number of vehicles that passed Luann: (1/3) * 150 = 50 minivans.

Next, we calculate the number of cars expected to pass Luann by multiplying the proportion of cars (which is (6 cars / 45 vehicles)) by the total number of vehicles that passed Luann: (6/45) * 150 = 20 cars.

Finally, we find the difference between the number of minivans and cars expected to pass Luann: 50 minivans - 20 cars = 30 more minivans than cars would be expected to pass Luann.