After purchasing a cell phone online, mary attempts to sell the phone for $325. if this was a markup of 24%, how much did mary originally buy the phone for?

Mary bought the phone for 1350

Step-by-step explanation:

The price mary bought the phone shall 100%

$325 is 24% of the price which she bought it.

So if $325 is equal to 24% , what shall 100 percent represent?

In order to find the answer to this, we cross multiply as follows;

24% = $325

100% = ?

cross multiply the above to get,

( 325 * 100 ) / 24

The abouve gives us the answer 1350

So 1350 is the original buying price of the phone.

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3