Question

River C is 200 miles longer than River D. If the sum of their lengths is 5580 ​miles, what is the length of each​ river?

Answer 1

5580 minus 200 equals to 5380.
River D is 5380 divided by 2 which is 2690.
River C is 2690 plus 200 which is 2890.

Answer 2

Yo sup??

Let the length of river D be x

then the lenght of river C will be 200+x

but,

lenght of river C+lenght of river D=5580

x+x+200=5580

2x=5380

x=2690

Therefore lenght of river D is 2690 and that of C is 2890

Hope this helps