mags got a scale model of jet plane from an online auction. she looked up the real length and found it to be 65 feet. if the model' s scale is 1 foot to 5 feet, how long will the model be

The model's dimensions are always 1/5 the corresponding dimension of the real plane. In this case, the model's length will be 1/5 the length of the real plane or 65*1/5=13 feet.