Respuesta :
Answer:
21 seconds
Step-by-step explanation:
If an hour is 60 minutes, then we can subtract 54 from 60 and then add 15.
60-54=6
6+15=21.
Martin has 21 seconds left to finish his test.
Hope this helps!
Answer:
21 seconds
Step-by-step explanation:
If an hour is 60 minutes, then we can subtract 54 from 60 and then add 15.
60-54=6
6+15=21.
Martin has 21 seconds left to finish his test.
Hope this helps!