# Gary has guitar lessons every 5 days and band practice every 4 days his first band practice is in 4 days and his first guitar lessons and band practice on the same day explain how you know

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## Question:

Gary has guitar lessons every 5 days and band practice every 4 days his first band practice is in 4 days and his first guitar lessons and band practice on the same day explain how you know

20 days

Step-by-step explanation:

Gary has guitar lessons every 5 days

Gary band practice every 4 days

Gary first guitar lessons and band practice on the same day.

Next day when both practice on same day should be multiple of 4 and 5.

Least common multiple of 4 and 5 ,

4 = 4, 8, 12, 16, 20, 24, ……

5 = 5, 10, 15, 20, 25, ……….

Common multiple in both number is 20.

After 20 days he will got for guitar lesson and band practice same day.

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