Question 903738
p, j, r, the fractions that each paid.

{{{p+j+r=1}}}, the whole check.


{{{p=(4/5)j}}} and {{{j=(1/3)r}}}, from the description


Both the last two equations have j in them.
..., and {{{r=3j}}};


{{{highlight_green((4/5)j+j+3j=1)}}}
{{{(4/5+1+3)j=1}}}
{{{(4/5+5)j=1}}}
{{{(4/5+20/5)j=1}}}
{{{(24/5)j=1}}}
{{{highlight(j=5/24)}}}


The question asks to find r.
{{{r=3j}}}
{{{r=3(5/24)}}}
{{{highlight(r=5/8)}}}