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A sporting goods store sells 3 fishing reels and 4 fishing rods for $523. Later, they sell 9 fishing reels and 3 fishing rods for $507. Find the price of each item.
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Aug 16, 2018
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A sporting goods store sells 3 fishing reels and 4 fishing rods for $523. Later, they sell 9 fishing reels and 3 fishing rods for $507. Find the price of each item.
Mathematics
middle-school
Neeraj Sharma
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-3(3f+4s=523)+(9f+3s=507)
-9f-12s+9f+3s=-1569+507
-9s=-1062
s=118, making 3f+4s=523 become:
3f+472=523
3f=51
f=17
So the reels are $17 each and the rods are $118 each.
Lubos
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Aug 21, 2018
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