Respuesta :
1.) Set up an equation
50+80h=310 h stands for hours
-50 - 50
80h= 260
divide 80 to both sides
h=3.25
The mechanic works for 3 hours and 25 minutes
50+80h=310 h stands for hours
-50 - 50
80h= 260
divide 80 to both sides
h=3.25
The mechanic works for 3 hours and 25 minutes