Question

John played a note on his tuba that vibrated the air 50 times per second. If

he played the note for 2 seconds, how many times did the air vibrate?

Answer 1

100 times

Explanation:

2 seconds=100 times

100÷50=2

So now you can do

50×2=100

Answer 2

100 times

Step-by-step explanation: vibration per second: 50 times

vibration for 2 seconds; 50*2=100 times