Question

in a car parking the ratio of black cars to blue is 5:6 while that of blue cars to green is 3:10 find the ratio of black cars to green cars

Answer 1

Firstly, you would scale the ratio of Black to blue cars so that the ratio of the blue cars matched. So you must make 6 become 3. This means that you must divide the ratio of 5:6 by 2.

This will get you 2.5:3

As the value of the blue cars is now equal, you can substitute the value of the black cars in for it.

This gives you the ratio of 2.5:10 of black cars to green cars

This would simplify to 1:4 black cars to green cars