Question 1134964

let’s say Mary's penny bank can hold {{{x}}} pennies
if Mary's penny bank is {{{1/4 }}}full, we have
{{{x/4}}}
 After she adds {{{360}}} pennies, it is {{{5/8}}}, so we have

{{{x/4+360=(5/8)x}}}...........solve for {{{x}}}, both sides multiply by {{{8}}}

{{{8x/4+360*8=8(5/8)x}}}

{{{2x+2880=5x}}}
{{{2880=5x-2x}}}
{{{2880=3x}}}
{{{x=2880/3}}}
{{{x=960}}}

   Mary's bank can hold {{{960}}} pennies