the distance from city A to city B is 3005 miles less than the distance from city C to city D

Question

By air, the distance form city A to city B is 3005 miles less than the distance from city C to city D. If the toal of these two distances is 7815 miles, find distance from city C to city D

Answer 1

By air, the distance form city A to city B is 3005 miles less than the distance from city C to city D. If the toal of these two distances is 7815 miles, find distance from city C to city D

let x = distance from city C to City D

so, x - 3005 = distance from city A to city B

add these two distances for the total distance of 7815

(x-3005)+x = 7815

2x -3005 = 7815

2x = 7815 +3005

2x =  10820

x = 10820/2

x = 5410 miles = distance from city C to city D

5410 -3005 = 2405  miles= distance from city A to city B

Answer 2

5410 is the wrong answer, in fact its 5430. check your work , nice try