The greatest common divisor of the two numbers is 15 while their least common multiple is 90. If one of the numbers is 30, then the other number is?
Answer: 45
Explanation
45 is the correct answer
LCM(a,b) × HCF(a,b) = a × b LCM * HCF = One Number * Other Number 15 * 90 = 30 * Other number Hence, Other number = (90 * 15)/30 = 45
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