Question

River C is 400 miles longer than River D. If the sum of their lengths is 5,530 miles, what is the length of each river

Answer 1

river c is 2965 miles long while river d is 2565 miles long

Explanation:

c+d=5530

400+d+d=5530

400+2d=5530

2d=5530-400

2d=5130 /:2

d=2565

c=d+400

c=2565+400

c=2965