Respuesta :

Answer:

she worked a total of 20 hours

Answer:

h = 21

Step-by-step explanation:

10h + 15 = 225

10h + 15 - 15 = 225 - 15

10h = 210

10 ÷ 10h = 210 ÷ 10

h = 21

ACCESS MORE
EDU ACCESS