the following is a report of defective parts reported by inspectors in 3 electronic factories:
brookline 3 per 10,000
brookville 5 per 100,000
brooklyn 13 per 1,000,000
which of the following beset expresses the portion of defective parts in three factories combined:
A. 5 per 10,000
B. 66 per 10,000
C. 66 per 100,000
D. 93 per 1,000,000
E. 363 per 1,000,000

Question

the following is a report of defective parts reported by inspectors in 3 electronic factories: 
brookline           3 per 10,000
brookville          5 per 100,000
brooklyn            13 per 1,000,000
which of the following beset expresses the portion of defective parts in three factories combined: 
A. 5 per 10,000
B. 66 per 10,000
C. 66 per 100,000
D. 93 per 1,000,000
E. 363 per 1,000,000

nincompoop · Answer

how would you solve this? come up a way how to do it first...