Two bodies of masses $12 \mathrm{~kg}$ and $6 \mathrm{~kg}$ are projected simultaneously with velocities $15 \mathrm{~ms}^{-1}$ and $20 \mathrm{~ms}^{-1}$ respectively from the top of a tower of height $25 \mathrm{~m}$. The body of mass $12 \mathrm{~kg}$ is projected vertically upwards and the body of mass $6 \mathrm{~kg}$ is projected horizontally. The maximum height reached by the centre of mass of the system of two bodies from the ground. $$ \left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right) $$

• Correct answer
  A

  $5 \mathrm{~m}$
• B

  $25 \mathrm{~m}$
• C

  $30 \mathrm{~m}$
• D

  $50 \mathrm{~m}$

Hence, the correct answer is option: 'A'.