here,
mass of man , m1 = weight of man /g
m1 = 660 /9.81 kg = 67.28 kg
mass of Woman , m2 = weight of Woman /g
m2 = 460 /9.81 kg = 46.89 kg
let the velocity of man and woman be v1 and v2
as they have same momentum
m1 * v1 = m2 * v2
v1 /v2 = m2 /m1
v1 /v2 = 46.89 /67.28
v1 /v2 = 0.697
the ratio of the man's kinetic energy Km to that of the woman Kw , R = Km /Kw
R = (0.5 * m1 * v1^2) /(0.5 * m2 * v2^2)
R = (67.28/46.89) * ( 0.697)^2
R = 0.7
the ratio of the man's kinetic energy Km to that of the woman Kw is 0.7
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