How many vehicles.

Question

The number of cars in the yard is three times as high as the number of mopeds. The number of bicycles is twice as high as the number of cars. The total number of vehicles is 30. Use the equation to solve the number of cars, mopeds and bicycles.

Answer 1

Let x = the number of mopeds

Let 3x = the number of cars

Let 6x = the number of bicycles

x + 3x + 6x = 30

10x = 30

x = 3 mopeds

3x = 9 cars

6x = 18 bicycles