Question 389886

Let {{{t = numbers- of- hours}}}

{{{MB _Movers_ Cost = 40t + 85}}}

and
{{{Champ _Mover _Cost = 60t}}}

{{{60t > 40t + 85}}}

{{{60t - 40t > 85}}}

{{{20t > 85}}}

{{{t > 85/20}}}

{{{t > 4.25}}}

We can say when {{{t = 5 hr}}}, Champ is more expensive.