Answer:
In 3 hours 7 minutes and 30 seconds both stocks will be same.
Explanation:
It is given that the price of Stock A at 9 AM was $12.84. The price has been increasing at the rate of $0.07 each hour.
The price of stock B at noon was $13.34 which is decreasing at the rate of $0.09 per hour.
So, let's set up equation for each.
Price of stock A equation is
y= 0.07 x +12.84
Price of stock B equation is
y= 13.34-0.09 x
Where 'x' is number of hours.
Let's set up both equations as same to find value for x.
0.07 x+12.84= 13.34-0.09 x
Add both sides 0.09 x
0.16 x+12.84= 13.34
Subtract both sides 12.84
0.16 x = 0.5
Divide both sides by 0.16
x=3.125
Let's change the decimal to minutes.
0.125*60= 7.5 minutes
So, in 3 hours 7 minutes and 30 seconds both stocks will be same.