28 screws per 16 pieces of wood
28 / 16 ----> Simplify your fraction
7 / 4
7 screws per every 4 pieces of wood
Answer:
A or B
Step-by-step explanation:
1500 cans / 3 workers = 500 cans per worker.
1 worker makes 500 cans in 4 days.
4 workers x 500 cans = 2000 cans in 4 days.
2000 x 2 = 4000 cans, 4 days x 2 = 8 days.
It will take 8 days.
Here are your examples
A spring that is bouncing up and down.
An atom or molecule that resonates with a certain frequency.
In fact, anything that resonates: a violin string, a pendulum, the air column in a muffler,.....