Thread: Shares of Stock

Tony bought a number of shares of stock for $720. A month later the value of the stock increased by $8 per share, and he sold all but 20 shares and received $800. How many shares did he sell and at what price per share?

Originally Posted by magentarita

Tony bought a number of shares of stock for $720. A month later the value of the stock increased by $8 per share, and he sold all but 20 shares and received $800. How many shares did he sell and at what price per share?

Lets say he had x shares

And the price of each share = y

Total value for all stocks = 720$ = xy

Thus our first equation is

xy= 720$


------------------------------
After a month
---------------------------
No. shares sold =x-20

rice of each share = y+ 8

Amount he received =(x-20)(y+8) = 800$

Thus our second equation is

(x-20)(y+8) = 800$

________________________________________________
Solve the two equations

x = 60 , y= 12

Originally Posted by ADARSH

Lets say he had x shares

And the price of each share = y

Total value for all stocks = 720$ = xy

Thus our first equation is

xy= 720$


------------------------------
After a month
---------------------------
No. shares sold =x-20

rice of each share = y+ 8

Amount he received =(x-20)(y+8) = 800$

Thus our second equation is

(x-20)(y+8) = 800$

________________________________________________
Solve the two equations

x = 60 , y= 12

I like your set up.