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.
