Question 126904
A student already has 24 credits hours……….=> 8grades 

And has a {{{1.875 GPA}}}………. which is equal to total number of points (which is {{{45}}}) 

divided by number of earned credits hours ( which is {{{24}}})

{{{B's}}} gives you  {{{GPA}}} of {{{3.00}}}

To  raise his GPA to a{{{2.40}}}, student needs {{{x }}} B's


{{{2.40= (45+3*x)/(24+x) }}}…..note, student will have only B's (no A’s, no C’s, D’s, or F’s) 

solve for {{{x}}}

{{{(2.40)(24+x) = 45 + 3*x}}}…..
	
{{{57.6 + 2.40x = 45 + 3x}}}…..

{{{57.6 -45 = 3x -2.40 x }}}…..
	
{{{57.6 -45 = (3 -2.40) x }}}…..

{{{12.6 = 0.6x }}}…..

{{{x = 21}}}


Check:

{{{2.40= (45+3*21)/(24+21) }}}…..
	
{{{2.40= (45+63)/45}}}…..

	{{{2.40= 108/45 }}}…..

	{{{2.40= 2.4}}}…..