SOLUTION: Helen's Health Foods usually sells 400 cans of ProPac Muscle Punch per week when the price is $5 per can. After experimenting with prices for some time, Helen has determined that t
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Question 38277: Helen's Health Foods usually sells 400 cans of ProPac Muscle Punch per week when the price is $5 per can. After experimenting with prices for some time, Helen has determined that the weekly demand can be found using the equation
d=600 - 40p where d is the number of cans and p is the price per can.
a) Will Helen sell mores or less Muscle Punch if she raises her prices from $5?
b) What happens to her sales every time she raises her price by $1? Answer by fractalier(6550) (Show Source):
You can put this solution on YOUR website! If you examine the demand equation
d = 600 - 40p
you see that the demand goes DOWN (she sells less punch) as p goes UP
We can rewrite it as
d = -40p + 600
to put it into slope-intercept form.
Here you can see the slope is -40.
That means that for every increase of $1 in p, the demand goes down 40.
