Let 'x' and 'y' be the two numbers
H.C.F of x & y = 3
L.C.M of x & y = 60
and, x + y = 27
Product of two numbers = H.C.F * L.C.M
xy = 3×60 = 180
(1/x) + (1/y) = (x + y)/(xy) = 27/180 = 3/20
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