document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=550866>Question 550866</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Greg's family rode in a taxicab last satuday night. The total cost of the ride, with a 20% tip, was $25.80. What was the cost of the ride without tip? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #359155 by </B><A HREF=/tutors/aboutme.mpl?userid=bucky><B>bucky(2189)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bucky><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=359155\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let C represent the cost of the ride without a tip. So when Greg's family arrived at their destination, the meter said that they owed the driver C. <BR>\n" );
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document.write( "They apparently got good service so they decided to add a 20% tip. That means that they multiplied the cost on the meter by 0.2 (0.2 is equivalent to 20%). and they added that to C. When they did that the total was $25.80. In equation form you can write that:<BR>\n" );
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document.write( "C + 0.2*C = $25.80<BR>\n" );
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document.write( "You can add the two terms on the left side because they both involve C. The 1*C plus 0.2*C equals 1.2*C and this makes the equation become:<BR>\n" );
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document.write( "1.2*C = $25.80<BR>\n" );
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document.write( "Now you can solve for C by dividing both sides of the equation by 1.2 to get:<BR>\n" );
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document.write( "C = $25.80/1.2 = $21.50<BR>\n" );
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document.write( "So you now know that C (the cost of the ride) was $21.50. To that amount they added a 20% tip (0.2 times $21.50 = $4.30). So the $21.50 for the ride and the $4.30 for the tip add up to $21.50 + $4.30 = $25.80, just as the problem said it should.<BR>\n" );
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document.write( "In summary, the cost of the taxicab ride was $21.50<BR>\n" );
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document.write( "Hope this helps you to understand the problem a little better.<BR>\n" );
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