Alana bought a stock, which dropped 10% from the previous day. The value of her stock, after the price drop was $305 Wh ch equation could she use to find the price of the stock before the price drop?
Mathematics · College · Tue Nov 03 2020
Answered on
Answer: Alana wants to find the original price of the stock before the price drop of 10%. Let's call the original price of the stock "P". When the stock dropped by 10%, it lost 10% of its original value, which means Alana is left with 90% of P.
To express this in a mathematical equation, we can use the following relationship:
The value after the drop (90% of P) = $305
We can express 90% as a decimal 0.90, so the equation would look like:
0.90 * P = $305
Now we want to solve for P, and we can do this by dividing both sides of the equation by 0.90:
P = $305 / 0.90
Now you can use a calculator to find the value of P.