Question

A drum vibrates 420 times in 12 minutes. what is the frequency?​

Answer 1

you can solve this by

f = no of vibration/time

so 420/12 gives 35

so 35hz is frequency

Answer 2

Answer:

you can solve this by

f = no by vibration/time

so 420 / 12 gives 35

so 35 hz is the frequenty