Respuesta :

Answer:

h = 7

Step-by-step explanation:

1 hour = 60 mins

h hours = 60h mins

60h + 30 = 450

60h = 420

h = 7

Answer:7

Step-by-step explanation:

h+30=450

h=450-30

h=420minutes

But 1hour=60minutes

Therefore 420minutes=420/60 hour =7hours