SOLUTION:
At a department store buying 3 belts and 4 ties cost 71 dollars,while 4 belts with 3 ties cost 69 dollars.Find the price of a belt and the price of a tie.
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At a department store buying 3 belts and 4 ties cost 71 dollars,while 4 belts with 3 ties cost 69 dollars.Find the price of a belt and the price of a tie.
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Question 742419:
At a department store buying 3 belts and 4 ties cost 71 dollars,while 4 belts with 3 ties cost 69 dollars.Find the price of a belt and the price of a tie. Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! 3B+4T=71 MULTIPLY BY 4
4B+3T=69 MULTIPLY BY -3 & ADD.
12B+16T=284
-12B-9T=-207
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7T=77
T=77/7
T=$11 FOR EACH TIE.
3B+4*11=71
3B+44=71
3B=71-44
3B=27
B=27/3
B=$9 OR EACH BELT.
PROOF:
4*9+3*11=69
36+33=69
69=69
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