one atom of magnesium is 24 times heavier than 1/12 of a carbon -12 atom , so the atomic mass of magnesium is ?please give full description?

Given: one atom of magnesium is 24 times heavier than 1/12 of a carbon -12 atom,

= Mg= 24 x 1/12 of C¹²

Mass of Mg = 24/12 x 12 (mass of C¹² is 12)

Mass of Mg= 2 x 12

Mass of Mg = 24