![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
A family of four went out the dinner.
\Their bill including the tax was ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dc3307b6caf1c635aa56b5575347a4b9.png\")
.
They left a ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ee3acd0287e3e9e11359533acaee29b7.png\")
tip on the total cost of their bill.
Find the total cost of the dinner including tax.
\Tip amount is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c647a0a30e31954c2e595412229ec900.png\")
.
Therefore, the tip amount is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1cf9bfb9c6c6d7d2dcae2056f0481c7d.png\")
.
The total cost of the dinner includes the tip.
\ Therefore, the total cost is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2fadb6da207ddcb6d3d5c9bb7e2fe62e.png\")
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The total cost is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=702e61dac68b33b4c7b6b9f1347a7516.png\")
.