6. There are 18 bikes in a bike rack. There are 4 more blue bikes than yellow bikes, and 2 less yellow bikes than green bikes. How many bikes of each color are in the rack?

Let's break it down! If we let the number of yellow bikes be Y, then the blue bikes would be Y + 4, and the green bikes would be Y + 2. So we can set up an equation: Y (yellow) + (Y + 4) (blue) + (Y + 2) (green) = 18. This simplifies to 3Y + 6 = 18. Solving for Y gives us 4 (yellow bikes). Therefore, there are 4 yellow bikes, 8 blue bikes, and 6 green bikes. Happy cycling! If you ever face similar problems, jot down variables for each unknown and express relationships clearly with equations. Remember to double-check your calculations and re-read the question to avoid overlooking any details. It’s easy to miss a key piece of info when you're focused on solving!