Respuesta :

Answer:

17 hours

Step-by-step explanation:

156/12 = 13

221/13 = 17

Hope this helped :)

Answer:

17 hours

Step-by-step explanation:

156 / 12 = 13 ( 13 dolars per hour)

221 / 13 = 17 ( 17 hours of work to earn $221)