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Price

by parallel_chase » Fri Aug 22, 2008 7:45 pm
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 sqrt2*x- x cents per day. What is the approximate price when a bushel of corn costs the same amount as a peck of wheat?

OA after few discussions.

Sorry dont have any answer choices for this.
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by stop@800 » Fri Aug 22, 2008 9:08 pm
corn constant increase at 5x
wheat decrease at -.414x

lets say after y days prices are equal so

320 + 5xy = 580 - .414xy

y = 260 / (5.414x)

i think i need x to find no of days.

What others say??
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