i need some help on this question

Question

a diamond cutter has a raw diamond that weighs 19.5 carats and from which two 5-carat diamonds will be cut.

i need to find out how much the raw diamond weigh in milligrams and plus how much will each of the two cut diamonds weigh in milligrams

Answer 1

See response here:
http://www.jiskha.com/display.cgi?id=1252974144

Answer 2

A carat of diamond weighs 200 mg.
So a 19.5 carats raw diamond would weigh 19.5*200 = 3,900mg
5-carat gem weighs 200*5=1000 mg.

Answer 3

The original diamond weight is 19.5*200 = 3,900mg
A 5-carat gemstone weighs 200*5=1000