Answer:
LCM of 20, 30, and 40
LCM = 120
they would cry together for the first time in 120 minutes.
Answer:
He invested $1200 and had a balance of $1260 after 3 years.
I like black chicken that lay black eggs
In 144 minutes, or at 5:19 pm, the trains will arrive at the same time again.
