So, there will be 40 green cars. if we want the ratio to be 1:3, we will need there to b three times as many silver cars as green cars: 40*3=120.
we already have 20 silver, so we need to add 120-20, that is 100 silver cars!
The answer is C. C is not a proportion.
Hope this helps!
R/s^5t^r2st-2/r^3
hope this helps
