val2279
contestada

An plumber charges $50 for a service call, plus $85
per hour of service. If he charged $390, how many
hours did he work?

Respuesta :

If he was charged $390 he would have worked for 4 hours
390-50=340

340 divided by 85 is 4

the plumber worked 4 hours

hope this helps

Otras preguntas