Finding smaller number of two numbers using HCF and LCM

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Two numbers have $HCF=100$ and $LCM=3000$. Find the smaller of the two numbers if both numbers are more than $100$.

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The product is $300,000$ and both numbers are divisible by $100$ and can be divided by $3,000.$ Let the numbers be $100m$ and $100n,$ $m$ and $n$ being integers then by product $mn = 30$ and hence $m,n$ can be $1,30; 2,15; 3,10; 5,6$ but the first case is not possible hence smaller number can be $200, 300, 500$