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11 Oct 2009, 17:17
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Tough and tricky 2:
2. The price of a bushel of corn is currently $3.20, and the price of a peck of wheat is $5.80. The price of corn is increasing at a constant rate of 5x cents per day while the price of wheat is decreasing at a constant rate of \(\sqrt{2}\)*x-x cents per day. What is the approximate price when a bushel of corn costs the same amount as a peck of wheat?
(A) $4.50
(B) $5.10
(C) $5.30
(D) $5.50
(E) $5.60
2. The price of a bushel of corn is currently $3.20, and the price of a peck of wheat is $5.80. The price of corn is increasing at a constant rate of 5x cents per day while the price of wheat is decreasing at a constant rate of \(\sqrt{2}\)*x-x cents per day. What is the approximate price when a bushel of corn costs the same amount as a peck of wheat?
(A) $4.50
(B) $5.10
(C) $5.30
(D) $5.50
(E) $5.60
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12 Oct 2009, 04:18
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320 + 5x = 580 - (1.414 - 1)x
Solve to get x
Answer = (320 + 5x)/100
= 5.6
Solve to get x
Answer = (320 + 5x)/100
= 5.6
12 Oct 2009, 09:44
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Set of Tough & tricky questions is now combined in one thread: tough-tricky-set-of-problms-85211.html
You can continue discussions and see the solutions there.
You can continue discussions and see the solutions there.
