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Dennis_Churaev [7]
3 years ago
8

Five years after 650 high school seniors graduated, 400 had college degree and 310 were married. Half of the students with a col

lege degree were married. What is the probability that a student has college degree or is not married? Enter your answer in simplified fraction form; example: 33/51
Mathematics
1 answer:
nalin [4]3 years ago
3 0
I THINK THE ANSWER IS -70 I THINK

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We know:

LCM(a,\ b)=\dfrac{ab}{GCF(a,\ b)}

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GCF(a,\ b)=2,\ LCM(a,\ b)=20,\ a\leq12,\ b\leq12

Substitute:

20=\dfrac{ab}{2}\qquad|\cdot2\\\\ab=40

40=1\cdot40=2\cdot20=4\cdot10=5\cdot8

Only 4 and 10 meet the requirements of the question.

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40 and 1 NOT, because 40 > 12

20 and 2 NOT, because 20 > 12

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