Question

suppose the mass of the earth somehow increases by 10 percentage without any change in its size. What would happen to your weight?

Answer 1

it will happen of our weight of our body will somehow increase because the earth being a massive body if it's weight increases only it 10℅,then earth will attracts the objects more then it means that any bodies mass will definitely increase.
Hope it helps you.

Answer 2

it means that the density of the planet had increased by 10% , since 'acceleration due to gravity is,
g = G* mass of earth/ (radius of earth)^2
though the size of the earth hasn't rise but the planet has densed so, its weight ......or mass
so the value of g would affect, so our weight!