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Just list out the multiples of 5 until 50 and the multiples of 7 lesser than 50.
5, 10, 15, 20, 25, 30, 35, 40, 45
7, 14, 21, 28, 35, 42, 49
From this we see that Andrew is 20 years old, since its a multiple of 5, and when he's 21, its a multiple of 7.
5, 10, 15, 20, 25, 30, 35, 40, 45
7, 14, 21, 28, 35, 42, 49
From this we see that Andrew is 20 years old, since its a multiple of 5, and when he's 21, its a multiple of 7.
Date Posted:
7 years ago