+164 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?
+308 Answer: Skid's salary is 2120.
Solution:
Let s be Skid's salary. Let p be Pump's salary.
s/4 = p/5 + 250
s/2 = 3p/10 + 640
5s = 3p + 6400
5s = 4p + 5000
p = 1400
s = 2120
