The largest of all known diamonds, the Cullinan diamond,
weighed 3106 carats before it was cut into io5 gems. The largest cut, Cullinan I,
or the Great Star of Africa, weighs 530 carats. Another cut, Cullinan II, weighs
3172 carats. Cullinan III weighs 94 carats, and Cullinan IV weighs 63 carats.
A= How many carats of the original Cullinan diamond were left after the Great Star of Africa and Cullinan II were cut?
B= How much more does the Cullinan II weigh than Cullinan IV?
C= Which diamond weighs 223 carats less than Cullinan II?