SOLUTION: A woman bought some large frames for ​$13 each and some small frames for ​$7 each at a closeout sale. If she bought 20 frames for ​$170,find how many of each type

Algebra ->  Equations -> SOLUTION: A woman bought some large frames for ​$13 each and some small frames for ​$7 each at a closeout sale. If she bought 20 frames for ​$170,find how many of each type      Log On


   



Question 1128170: A woman bought some large frames for ​$13 each and some small frames for ​$7 each at a closeout sale. If she bought 20 frames for ​$170,find how many of each type she bought.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = number of small frames she bought
+20+-+x+ = number of large frames
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+13%2A%28+20+-+x+%29+%2B+7x+=+170+
+260+-+13x+%2B+7x+=+170+
+-13x+%2B+7x+=+-90+
+6x+=+90+
+x+=+15+
and
+20+-+x+=+5+
She bought 15 small and 5 large frames
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+13%2A5+%2B+7%2A15+=+170+
+65+%2B+105+=+170+
+170+=+170+
OK