SOLUTION: Jim's weekly income is $100 less than triple john's weekly income. Huey's weekly income is $20 more than double john's weekly income. Huey's income is $120. What is Jim's income?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Jim's weekly income is $100 less than triple john's weekly income. Huey's weekly income is $20 more than double john's weekly income. Huey's income is $120. What is Jim's income?      Log On


   

Question 978773: Jim's weekly income is $100 less than triple john's weekly income. Huey's weekly income is $20 more than double john's weekly income. Huey's income is $120. What is Jim's income?
Found 2 solutions by richwmiller, josmiceli:
Answer by richwmiller(17219) About Me  (Show Source):
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +a+ = Jim's weekly income
Let +b+ = John's wekly income
Let +c+ = Huey's weekly income
--------------------------------
(1) +a+=+3b+-+100+
(2) +c+=+2b+%2B+20+
(3) +c+=+120+
----------------------
(2) +120+=+2b+%2B+20+
(2) +2b+=+100+
(2) +b+=+50+
and
(1) +a+=+3%2A50+-+100+
(1) +a+=+50+
----------------
Jim's income is $50/wk
check:
(1) +a+=+3b+-+100+
(1) +50+=+3%2A50+-+100+
(1) +50+=+50+
OK