<PRE><B>Question 939260</B>
List the prime factor form of the numbers::
john calls his dad every 3 days. = 3
 Katie calls every 4 days.= 2^2
 Jamie calls every 6 days. = 2*3
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The least common multiple is 2^2*3 = 12
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Ans:: once in every 12 days, all three will call on the same day.
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Cheers,
Stan H.
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