
Weight of an object on moon is 1/6th the weight of the object on earth. The mass of an object on earth and moon remains the same.
So (1) Weight of the man on earth W = mass m * Accelaration due to gravity g = 70 Kg * 9.8 m/s2 = 686 N
(2) Weight of the man on moon = 686 * 1/6 = 114.33 N
(3) Mass of the man on moon 70 Kg
(4) Mass of the man on earth 70 Kg