+0  
 
0
63
1
avatar

At a 9% off sale Alexandra bought a new drill and saved $17. How much did she pay for the drill? (two decimal places)

 

Richard's furniture store bought a couch and marked the price up 31%. At a 11% off sale the couch sold for $2,820. How much did Richard pay for the couch originally? (two decimal places)

Guest Jun 28, 2018
 #1
avatar+88962 
+1

At a 9% off sale Alexandra bought a new drill and saved $17. How much did she pay for the drill? (two decimal places)

 

Call the original price, P

9%  off  = 91%  of the original price  = .91P

And a savings of $17  = P - 17

So we have 

 

P ( .91)  = P -  17     add 17 to both sides,  subtract .91P from both sides

 

17  =  1P  - .91P

17  = .09P     divide both sides by .09

$188.88  = P  (the original price )

 

 

Richard's furniture store bought a couch and marked the price up 31%. At a 11% off sale the couch sold for $2,820. How much did Richard pay for the couch originally? (two decimal places)

 

Call the original price that Richard paid, P

The price after the markup was  (1.31) P

After an 11%  markdown the price was  ( 1.31 P ) (.89)

 

So we have

 

(1.31 P ) (.89)  = 2820

 

1.1659 P = 2820       divide both sides by  1.1659

 

P  = 2820 / 1.1659  =  $2418.73

 

 

cool cool cool

CPhill  Jun 28, 2018

36 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.