Lucy is in charhe of orginizing her schools talebt show. of 50 acts in the show 60% are musical acts how many musical acts are there in the talent show? please help and if you could explain. so I can do it on my own ​

John played a note on his tuba that vibrated the air 120 times per second if he played the note for 4 seconds how many times did the air vibrate ?

Okay, from the given word problem we can understand that :-

Time a note takes to vibrate in the air per second = 120 times

We are asked to find how many times the air will vibrate if John played a note on his tuba for 4 seconds. For this, we need to multiply the time taken by the note to vibrate in the air per second into 4. That is, we need to calculate ⇨ 120 × 4

__________________

Multiply 120 by 4 to get 480.

__________________

So, the answer is ⇨ The air will vibrate about 480 times if John played a note on his tuba for 4 seconds.

__________________