Question

What is bigger 75 kg or 110 Ib?

Answer 1

Those quantities can't be compared.  "Kg" is a unit of mass,
whereas "lb" is a unit of weight.  You can't convert mass to
weight without knowing the acceleration of gravity in the place
where the mass is.

For example:

-- 75 kg of mass weighs  418 lb on Jupiter. 

-- 75 kg of mass weighs  62.6 lb on Mars

-- 75 kg of mass weighs  27.4 lb  on the Moon.

-- 75 kg of mass weighs  165.3 lb  on Earth.

-- 75 kg of mass weighs  11.1 lb on Pluto.

It all depends where you take your 75 kg.