SOLUTION: 30 hours a week. Job A pays $5.90 per hour, and Job B pays $7.20 per hour. How many hours did she work at each job the week that she made $193.90?

Question 1030048: 30 hours a week. Job A pays $5.90 per hour, and Job B pays $7.20 per hour. How many hours did she work at each job the week that she made $193.90?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = hrs worked at job A
Let = hrs worked at job B
----------------------------
(1)
(2)
----------------------------
(2)
Multiply both sides of (1) by and
subtract (1) from (2)
(2)
(1)
-------------------------

and
(1)
(1)
------------------
She worked 17 hrs at job A and 13 hrs at job B
------------------
check:
(2)
(2)
(2)
(2)
OK
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