SOLUTION: Most mathematics professors love to invest their hard-earned money. A recent survey of 150 math professors revealed that: 111 invested in stocks; 98 invested in bonds; 100 inves

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Question 162544: Most mathematics professors love to invest their hard-earned money. A recent survey of 150 math professors revealed that:
111 invested in stocks;
98 invested in bonds;
100 invested in certificates of deposit;
80 invested in stocks and bonds;
83 invested in bonds and certificates of deposit;
85 invested in stocks and certificates of deposit;
9 did not invest in any of the three.
How many mathematics professors invested in stocks and bonds and certificates of deposit?

Answer by clemsongurl84(1) About Me  (Show Source):
You can put this solution on YOUR website!
The answer i think is 309...