1/4 of Skid's salary was $250 more than 1/5 of Pump's salary. After Skid spent 1/2 of his salary and Pump spent 7/10 of his salary. Skid had $640 more than Pump. What was Skid's salary?

S==Skid, P==Pump

1/4S ==250 + 1/5P........................(1)

1/2S - what Skid had left

3/10P - what Pump had left.

1/2S ==3/10P + 640........................(2), solve for S, P

S==$2,120 - Skid's salary

P==$1,400 - Pump's salary.