alleryHCF of two positive integers a and b is 5. Their LCM is 200. If a = 25, what is b?
A$8$
B$40$
C$50$
D$100$
Answer & Solution
Correct answer: B. $40$
HCF × LCM = a × b.
**So 5 × 200 = 25 × b. 1000 = 25b. b = 40.**
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