Respuesta :

Answer:

40

Step-by-step explanation: If 10 : 15, then 4 times both of those should be an hour. This would be 40 : 60. That is why 40 is the correct answer.

Answer:

40

Step-by-step explanation:

1 hour = 60 minutes

60/15 = 4

10 × 4 = 40

so the answer is 40.