A family has two cars. The first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of
35 miles per gallon of gas. During one particular week, the two cars went combined total of 1425 miles, for a total gas consumption of 55 gallons. How many gallons were consumed by each of
the two cars that week?
B is the center of a circle of radius 1. A and C are on the circle 100 degrees apart. So arc AC is 100 degrees. Arc AC the long way around is 360-100=260 degrees. That means any point D on arc AC will subtend a 130 degree angle. BD is a radius for all of those, and the radius is 1.
