john bought a computer for $2,000 and then paid a 5 percent sales tax, and Henry bought a computer for $1,800 and then paid a 12 percent sales tax. The total amount that Henry paid, including sales tax, was what percent less than the total amount that john paid, including sales tax? Choose the correct choice from the following answers
A) 3%	B) 4%	C) 7%	D) D.10%	E) 12%
For john   Cost of Computer = $2000   Sales tax = (5/100)*2000= 
<gadget id="calculator">(5/100)*2000</gadget>
<output>100</output>
$100   Total Cost of Computer= 2000 + 100= 
<gadget id="calculator">2000 + 100</gadget>
<output>2_100</output>
2100   For Henry   Cost of Computer= $1800   Sales tax = (12/100)*1800= 
<gadget id="calculator">(12/100)*1800</gadget>
<output>216</output>
$216   Total Cost of Computer= 1800 + 216= 
<gadget id="calculator">1800 + 216</gadget>
<output>2_016</output>
2016   % that Henry paid less than john= (2100 - 2016)*100/2100= 
<gadget id="calculator">(2100 - 2016)*100/2100</gadget>
<output>4</output>
4%   Answer: Option 4%
<result>B</result>
john bought a computer for $2,000 and then paid a 5 percent sales tax, and Henry bought a computer for $1,800 and then paid a 12 percent sales tax. The total amount that Henry paid, including sales tax, was what percent less than the total amount that john paid, including sales tax?