SOLUTION: WalMart found that the demand for Coke products varies inversely as the price of the product. When the price of a coke product is $2.75, the weekly demand is 1250. Find the weekly

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Question 180093: WalMart found that the demand for Coke products varies inversely as the price of the product. When the price of a coke product is $2.75, the weekly demand is 1250. Find the weekly demand if the price is raised to $4.00.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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the demand for Coke products varies inversely as the price of the product.
When the price of a coke product is $2.75, the weekly demand is 1250.
Find the weekly demand if the price is raised to $4.00.
:
here's one way
:
The equation
k%2Fp = d
where
d = demand
k = constant
p = price
:
d = 1250, p = 2.75, find k
k%2F2.75 = 1250
k = 1250 * 2.75
k = 3437.5
:
Find d when p = 4.00
d = 3437.5%2F4
d = 859 is the weekly demand when the price is $4