Question 997206
s, hours for Samuel
x, rate for Samuel
k, hours for Kathy
y, rate for Kathy


{{{system(x=2y,k=3s,k=36,sumOfWages>480)}}}


Sum of their wages:
{{{x*s+y*k}}}
{{{2y*s+y(36)}}}
{{{2y*(k/3)+36y}}}
{{{2y(36/3)+36y}}}
{{{2y*12+36y}}}
{{{24y+36y}}}
{{{60y}}}---------the sum of their wages.


Referring to the system was necessary for some of those steps.


Now,  {{{highlight(60y>480)}}}.