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by MI3 » Sun Jun 19, 2011 8:44 pm
A certain galaxy is known to comprise approximately 4 x 1011 stars. Of every 50 million of these stars, one is larger in mass than our sun. Approximately how many stars in this galaxy are larger than the sun?
A. 800
B. 1,250
C. 8,000
D. 12,000
E. 80,000

IMO - E, am I correct?
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by Frankenstein » Sun Jun 19, 2011 8:52 pm
Hi,
4*10^11/50*10^6 = 8000
Hence, C
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by MI3 » Sun Jun 19, 2011 8:53 pm
Thank you, Frankenstein. Stupid error on my part - used "5" instead of "50".
Frankenstein wrote:Hi,
4*10^11/50*10^6 = 8000
Hence, C
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