Find the rate in which both balls make one full rotation around the track.
Ball A:

It takes 30 seconds for Ball A to make a full rotation.
Ball B:

It takes 20 seconds for Ball B to make a full rotation.
Find the least common multiple of 20 and 30 to find the time at which they'll meet.
Multiples of 20: {20,40,60}
Multiples of 30: {30,60}
60 is the least common multiple of both 20 and 30.
The balls will meet again at
60 seconds.
The answer would be 8. I got that by adding up all the numbers (64) and then dividing <span>how many numbers there are total which gave me the answer of 8.</span>
Answer:
1/8
Step-by-step explanation:
yay
It’s 9b it’s just 4+5 with the b