Lol probably true

Isn't it just 1/50,000 for the first one and 1/10 for the second one? IDK

-27 is the answer

First, we need to find out how many silver cars needed to be added for the ratio 1:3. We can scale it up, making 1:3 to 40:120. After that, then you just need to find out how many you have to add. We can do 120-20, which means you have to add 100 silver cars.

100 SILVER CARS.

(4H+2M)-(3H-1M)=1H AND 1M (SUBTRACT LIKE TERMS)

SUBTRACT PRICES: $13.50-$9.25=$4.25

1 HAMBURGER AND 1 MILKSHAKE IS $4.25.