An employee at a construction company is ordering interior doors for some new houses that are being built. there are 6 one-story houses and 2 two-story houses on the west side of the street which require a total of 72 doors. on the east side there are 5 one-story houses and 7 two-story houses which require a total of 124 doors. assuming that the floor plans for one-story houses are identical and so are the two-story houses, how many doors does each type of house have?