I have 5 more red pins than yellow pins and 8 more yellow pins than green pins. The green pins are 3 centimeters shorter than the red and yellow pins. I have 18 green pins. How many red, yellow and green pins do I have

I believ the centimeter thing is to distract you. You have 18 green pin, just add 5 more to that and that's how many yellow pins you have, add 5 more than that and that's how many red pins you have. That's how I would do it. Your welcome Maria!