Answer:
There are 310 yards and 1240 yards per rush by each player
Step-by-step explanation:
Running back #1 = x
Running back #2 = y
x + y = 1550
y = 4x
x + 4x = 1550
5x = 1550
x = 1550 /5
x = 310 yards
y = 4x
y = 4 x 310
y = 1240 yards
Therefore, there are
Running back #1 = 310 yards
Running back #2 = 1240 yards