The HCF and LCM of two numbers m and n are respectively 8 and 200. If m + n = 84, then 1/m + 1/n is equal to
Choose the correct option.
A) 1/35  B) 3/50  C) 5/37  D) 2/35  E) None
Answer   We have, m x n = 8 x 200 = 1600   âˆ´ 1/m + 1/n = (m + n)/mn = 84/1600 = 3/50   Correct Option: 3/50
<result>B</result>
The HCF and LCM of two numbers m and n are respectively 8 and 200. If m + n = 84, then 1/m + 1/n is equal to