Of the vehicles on the road, 1/2 are cars and 1/8 are motorcycles. What fraction of the vehicles are not cars or motorcycles?

4/8 + 1/8 = 5/8

8/8 - 5/8 = ?

1/2 = 4/8 1= 8/8

Vehicles that are cars or motorcycles:

4/8 + 1/8 = 5/8

Vehicles that are not cars or motorcycles:

8/8-5/8 = ??

3/8

To find the fraction of vehicles that are not cars or motorcycles, we need to calculate the fraction of cars and motorcycles first, and then subtract that from 1.

Given that 1/2 of the vehicles are cars and 1/8 are motorcycles, we can calculate the total fraction of cars and motorcycles combined.

So, the fraction of cars is 1/2, and the fraction of motorcycles is 1/8. To find the combined fraction, we add these fractions:

1/2 + 1/8 = 4/8 + 1/8 = 5/8

Now, we need to subtract this fraction from 1 to find the fraction of vehicles that are not cars or motorcycles:

1 - 5/8 = 8/8 - 5/8 = 3/8

Therefore, 3/8 of the vehicles are not cars or motorcycles.