The HCF and the LCM of two numbers are 5 and 120 respectively. If the sum of the two numbers is 55, then the sum of the reciprocals of these two numbers is equal to?
Answer & explanation
Correct answer: option 2
\(\frac{1}{a}\) + \(\frac{1}{b}\)
= \(\frac{a + b}{ab}\) = \(\frac{55}{5 × 120}\) = \(\frac{11}{120}\)