An investor bought a number of shares of stock for 1,600. after the price dropped by $10 per share, the investor sold all but 4 of her shares for 1,120. how many shares did she originally buy?

1120/4=280.

280x=1600

x=5.7? that's what I came up with. I hope I did it right and its of help to you.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

$6.42

step-by-step explanation: