You are selling lemonade for $1.50 a bag of caramel corn is three dollars a hotdog is $2.50 at affair right and simplify and expression for the amount of money you receive and p people buy one of each item

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

How to do this , and can some one explain

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2