Question

Example. If the sum of two numbers is 55 and the h.C.F. And l.C.M of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to

Answer 1

Answer: Option C

Explanation:

Let the numbers be a and b.

Then, a + b = 55 and ab = 5 x 120 = 600.

The required sum = 1 + 1 = a + b = 55 = 11

a b ab 600 120