Posted by lorie on Saturday, January 15, 2011 at 12:56pm.
Sally works at a grocery store. In one week she earned $390 for working 47 hours, of which 7 hours were overtime. The next week she earned $416 for working 50 hours, of which 8 hours were overtime. What is Sally's HOURLY OVERTIME rate in dollars per hour? This question was answered as $8, but I don't think that can be right. Please help.

algebra  helper, Saturday, January 15, 2011 at 2:14pm
I made the correction below
let her regular rate be $x per hour
let her overtime rate be $y per hour
first week: 40x + 7y = 390
2nd week: 42x + 8y = 416
1st equat x 8 > 320x +56y = 3120
2nd equt x 7 > 294x + 56y = 2912
subtract
26x = 208
x = 8
substitute x = 8
40x + 7y = 390
40(8) + 7y = 390
320 + 7y = 390
7y = 70
y = 10
REINY had a typo, she had y = 8, when it should have been x.

algebra  Henry, Saturday, January 15, 2011 at 9:09pm
Lorie, check your 114,5:01pm post.
Answer This Question
Related Questions
 algebra  Sally works at a grocery store. In one week she earned $390 for ...
 algebra  Assume you work at a company where you are paid hourly. You are paid $...
 Math (Basic)  "A woman earns 10.00 per hour at her job, but if she works more ...
 Math  Assume you work at a company where you are paid hourly. You are paid $8....
 Math  Jim is paid overtime when he works more than 40 hours of per week. Write ...
 algebra  Jim is paid for overtime when he works more than 40 hours per week. ...
 Algebra  Tim works parttime at a retail store. His salary varies directly by ...
 Maths  Brent's normal wage is $672 for a 40 hour week. He worked overtime and ...
 math  Tim works parttime at a retail store. His salary varies directly by the ...
 Algebra  Maria worked 15 more overtime hours than Jordan one week. If Maria ...
More Related Questions