SOLUTION: Graph papers and rulers. 5 packs of graph and 30 rulers costs 40.00. 12 packs of graph paper and 20 rulers cost 44.00. What the the cost of 1 ruler?

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Question 31682: Graph papers and rulers. 5 packs of graph and 30 rulers costs 40.00. 12 packs of graph paper and 20 rulers cost 44.00. What the the cost of 1 ruler?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
5G+40R=40
12G+20R=44
MULTIPLYING THE FIRST EQUATIUON BY 12 WE GET 60G+360R=480
MULTIPLYING THE SECOND EQUATION BY -5 WE GET-60G-100R=-220
ADDING THESE TWO EQUATIONS WE GET 260R=260 OR R=$1 EACH