Ron paid $799.99 per laptop for three laptops and a flat rate fee for antivirus installation for a total bill of $2,529.57 at Gigahertz Computers. Jerry paid $777.16 per laptop for three laptops plus a per laptop antivirus installation fee for a total bill of $2,481.42 at TechZone Computers. What is the difference in the amounts they paid for the antivirus installation charges?
$21.34
$20.34
$23.44
$20.24

Question

Ron paid $799.99 per laptop for three laptops and a flat rate fee for antivirus installation for a total bill of $2,529.57 at Gigahertz Computers. Jerry paid $777.16 per laptop for three laptops plus a per laptop antivirus installation fee for a total bill of $2,481.42 at TechZone Computers. What is the difference in the amounts they paid for the antivirus installation charges?
   $21.34  
   $20.34  
   $23.44  
   $20.24

anonymous · Answer

@micahm @musicmouse @TheSmartOne

anonymous · Answer

@StudyGurl14 @insa @thomaster

studygurl14 · Answer

Ron:
799.99(3) + x =2,529.57

Jerry:
777.16(3) + 3y = 2481.42

Solve for x and y in those equations above^
Then find:
|x - y| = ?

studygurl14 · Answer

I multiplied the 799.99 and 777.16 by 3 because that is the cost of each laptop, and three were bought.
I multiplied y by 3, because it said there was a "per laptop antivirus installation fee".

studygurl14 · Answer

Do you understand? @MelodyMusic

anonymous · Answer

hmmm. I think i do :) @StudyGurl14 . can you help with more please?

studygurl14 · Answer

Sure @MelodyMusic . Please close this question and open a new one. Tag me to it.

anonymous · Answer

Okay :)