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The price of Stock A at 9 A.M. was ​$12.25. Since​ then, the price has been increasing at the rate of ​$0.07 each hour. At noon the price of Stock B was ​$12.75. It begins to decrease at the rate of ​$0.15 each hour. If the two rates​ continue, in how many hours will the prices of the two stocks be the​ same?

 Feb 2, 2021
edited by Guest  Feb 2, 2021
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Hi Guest!

 

A small side note, it really helps if you are more careful with the formatting, it makes reading a lot easier. 

x = hour from noon (note that since stock a starts at 9, it's x + 3)

 

12.25 + .07(x+3) = 12.75 - .15x

.07x + .21 = .5 - .15x

.22x = .29

x = 29/22

 

Well... that's not a very nice number for an hour. -.-

So ig the answer is 1:19 ish.

 

Maybe you can find the error in this?

 

Sorry I couldn't help more. 

 

=^._.^=

 Feb 3, 2021

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