Question 198613
Here we go:
{{{i=60x+120}}} and {{{d=75x}}} where x=hours
If {{{i=d}}} at hour "x" then
{{{75x=60x+120}}}
Simplify and solve
{{{15x=120}}}
{{{x=8}}}
8 hours

Anymore questions feel free to ask me.
Anthony Allie
arallie@gmail.com
http://arallie.webs.com/tutoring.htm