For a science project preparation, grade 4 students visit the science laboratory after every 16 days, while grade 5 students visit the laboratory after every 30 days. If students of both grades visited the lab today, find when they will visit the laboratory on the same day again?
Answer: After 240 days
Explanation
To find when both grades visit the lab on the same day again, we need to find the Least Common Multiple (LCM) of 16 and 30.
Multiples of 16: 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240
Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240
The LCM of 16 and 30 is 240.
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