if it takes 320 miles to travel from point A to point B.it takes 550 miles to travel from point B to point C. it takes 660 miles to travel from point C to point D. it takes twice as long to travel ftom point D to E then it does to travel from point A to B. how many miles does it take to get from point B to C? a.560 b.505 c.500 d.none