kingmartin0214 kingmartin0214
  • 07-12-2019
  • Mathematics
contestada

1 hour job costs $90
A 3 hour job costs $210
What is the initial amount and hourly rate

Respuesta :

tamara12399 tamara12399
  • 07-12-2019

Step-by-step explanation:

i+h=90

i+3h=210

so 2h=210-90=120

h=60

and i=90-60=30

so initial amount is $30 and hourly rate is $60

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