Question

The ratio of red cars to blue cars in a parking lot was 5:3. If there were 40 red cars, how Many blue cars were there?

Answer 1

Order your units (just to help),

Make sure your units are systematized in the order given.

Red cars 5 40

__________ __________ = __________, now we solve for x;

Blue cars 3 x

5/3 = 40/x

multiply by x on both sides

5/3x = 40

Then divide by 3/5 from both sides (multiplying by 3/5)

x = 24