Respuesta :
Answer: The stock is decreased by 25% over the two year period.
Step-by-step explanation:
Since we have given that
Decrease in value in one year = 50% = x
Increase in value in second year = 50% = y
So, Net change in stock over the two year period is given by
[tex]x-y-\dfrac{xy}{100}\\\\=-50+50-\dfrac{50\times 50}{100}\\\\=0-\dfrac{2500}{100}\\\\=-25\%[/tex]
Hence, the stock is decreased by 25% over the two year period.
Answer:
Step-by-step explanation:
Let the initial value of stock is t.
The value of stock after one year = 50% of the value of stock initially
= 50 t / 100 = t / 2
The value of stock after one more year = increases by 50%
= t/2 + 50% of t/2
= t/2 + t/4 = 3t/4
Decreased value after 2 years = t - 3t/4 = t/4
Percentage decrease = decreased value x 100 / initial value
= t/4t x 100 = 25%
Thus, the value of stock is decreased by 25% in two years.
