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Jenny my daughter goes to University of the Philippines library every 7
days while Jonathan goes to University of the Philippines library every 3
days. If they go together today, after how many days will they go together
again?​


Sagot :

Answer:

They will go together again in 21 days.

Step-by-step explanation:

Find the LCM

How to find the LCM?

Find the prime factors of each number

3 = 1, 3

7 = 1, 7

The prime factors of 3 and 5 are 1, 3, and 5.

Multiply the prime factors

1 x 3 x 7 = 15

The LCM of 3 and 7 is 15.

Final answer: They will go again together in 15 days.

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