Question

A bell rings every 2 seconds, and a bird chirps every 3 seconds. If the ring ant the chirp occur together right now, they will occur together in
A. 40 seconds
B. 41 seconds
C. 42 seconds
D. 43 seconds

Answer 1

Something wrong with your problem
As you stated it, they will occur together in 6 seconds

Answer 2

A bell rings every 2 seconds, and a bird chirps every 3 seconds. If the ring and the chirp occur together right now, they will occur together in
A. 40 seconds
B. 41 seconds
C. 42 seconds
D. 43 seconds

Answer 3

Artem!

The bell will ring at
0:00 , 0:02 , 0:04 , <b>0:06</b> , 0:08, ...
The bird will chirp at
0:00 , 0:03 : <b>0: 06</b> < 0:09 , ...

Can you not see that your choices of answers make no sense ?
I don't know of any way to make it more obvious.

Answer 4

42 seconds since 42 is a multiple of 2 and 3