Answer:
[tex]2\frac{2}{15}[/tex] hours from noon the stock prices will be same
Step-by-step explanation:
We can write equations for increasing stock and decreasing stock and find our answer.
Let number of hours be "t" for both to be same
For first, we can write:
13.14 + 0.06t
But, 2nd one starts from noon, so already 12pm - 9am = 3 hours gone, so stock A increased by 3 * 0.06 = 0.18, so we equation would be:
13.32 + 0.06t
Now, Stock B's equation [from noon]:
13.64 - 0.09t
Equate and solve:
[tex]13.32 + 0.06t=13.64-0.09t\\0.15t=0.32\\t=2\frac{2}{15}[/tex]
In 2 2/15 hours, the prices will be same
