An architect has his floor plan for a house he is building. the foundation for the house has already been laid and measures 300 feet. if the scale on his drawing is 25 ft = 1 in, how long is the house on his floor plan?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?