Three types of spacecraft can be used to reach moon. Spacecraft A weighs 12000 kg heavier than spacecraft B. Spacecraft C weighs 45000 kg and is 7500 kg lighter than spacecraft B. What is weight of Spacecraft A?

Question

$\begin{array}{11} (a)\; 27500\; kg \\ (b)\; 40600\; kg \\ (c)\; 49500\; kg \\ (d)\; 64500\;kg \end{array}$