Eric wants to make a model of his dad's 1965 Mustang. His dad suggests he use ratios to help him make the model to scale. Explain how using ratios will help Eric make his model

Shannon mary and john earn a weekly allowance ahannon earns the amount that is 2/3 of what john earns mary earns an amount that is 1 2/3 of what johns earns 20 dollars a week who eaens the greatest allowance and who earns the least