document.write( "Question 840180: Sun Lei bought a laptop for $1800. The total cost, including tax, came to 1890. What is the tax rate? I can't remember how to figure out the tax rate. Thank you Elena \n" ); document.write( "
Algebra.Com's Answer #505982 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi
\n" ); document.write( "\"%281890-1800%29%2F1800+=+90%2F1800+=+.05+\" 0r 5% tax rate \n" ); document.write( "
\n" );