SOLUTION: Over the last three evenings, Laura received a total of 91 phone calls at the call center. The second evening, she received 2 times as many calls as the third evening. The first ev

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Over the last three evenings, Laura received a total of 91 phone calls at the call center. The second evening, she received 2 times as many calls as the third evening. The first ev      Log On


   

Question 1161621: Over the last three evenings, Laura received a total of 91 phone calls at the call center. The second evening, she received 2 times as many calls as the third evening. The first evening, she received 9 fewer calls than the third evening. How many phone calls did she receive each evening?
Answer by ikleyn(52785) About Me  (Show Source):
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Let x be the number of call third evening.


Then you have this equation


    (x-9) + 2x + x = 91.


Solve it and find x.  Then evaluate 2x and (x-9).