An alarm beeps 16 times per minute. how much time will it take to beep 88 times?

1. 5 min 30 s.
2. 5 min
3. 4 min 30 s.
4. 3 min 30 s.
5. None of these

1 min to beep 16 times.

88 Beeps =  88/16 = 5.5 minutes.

We can convert this 5.5 min to 5 min 30 s.