Help please
Brainiest answer to whoever is first
And show some kind of work

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?