Sally is making a model building using a scale in which 1/2 inch equals 30 feet. if the building is 400 feet, how wide is the model, in inches?

Plzz help I'm so stuck!!

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.