Using a proportion that relates the values.
(Apply Joint variation)
Substitute .
Apply Cross multiplication: .
(Divide each side by 60)
Therefore, the value of y is .
The value of y is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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(Apply Joint variation)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=372c0db60c3284bc21757bd9ea2a8d5c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aeff3723ca60d2f261af24ff0fa96846.png\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d97f0d8c65119cb34fb369343ee67ca4.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e49832c034f728529fdf7f10f6961a94.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=884b5fbeef863bd01f36d14ed7d9c18b.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e8b44c076c2188fdb9001134712da529.png\")
(Divide each side by 60)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6b4b1433e5f2d7976f930b18d3a49c3f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ff5026b455ef399c66753e761c12a926.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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.