The HCF of two numbers is 15 and their LCM is 225. If one of the number is 75, then the other number is :

The HCF of two numbers is 15 and their LCM is 225. If one of the number is 75, then the other number is :
[A]45
[B]60
[C]90
[D]105

45
∵ First Number \times Second Number = HCF \times LCM
=> 75 \times Second Number = 15 \times 225
Second Number = \frac{15\times 225}{75} = 45
Hence option [A] is correct answer.

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