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December 11th, 2017, 10:26 AM  #1 
Newbie Joined: Dec 2017 From: USA Posts: 6 Thanks: 0  Word problem solve using a system of equations
At a concession stand, 100 bottles of water and pretzels were sold for a total of \$250. If one bottle of water costs \$1.50 and one bottle of pretzel costs \$3.50, how many of each were sold? Thanks! Last edited by skipjack; December 11th, 2017 at 02:04 PM. 
December 11th, 2017, 11:30 AM  #2 
Senior Member Joined: May 2016 From: USA Posts: 924 Thanks: 369 
What have you done so far? It is hard to help you find what is wrong with your work if you do not show it.

December 11th, 2017, 02:16 PM  #3 
Global Moderator Joined: Dec 2006 Posts: 18,720 Thanks: 1536 
It's rather obviously 50 bottles of each. To use a system of equations, I suggest w + p = 100, with a second equation that incorporates the prices. 

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