<PRE><B>Question 697858</B>
Sears has a sale on mechanics tool chests every 40 days and a sale on mechanics tool sets every 60 days. If both are on sale today, how long will it be before they are on sale together again?
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Using prime-factor method of finding the least common multiple:
40 = 2^3*5
60 = 2^2*3*5
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lcm = 2^3*3*5
lcm = 8*15
lcm = 120 days
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Cheers,
Stan H.</PRE>