How many times longer does our Sun fuse hydrogen at its core than does
a 3-M25 star? Show how the answer to this problem was determined.

"The lifetime = mass/luminosity × 10^10 years is simply = (star's
mass)/[(star's mass)p] × 10^10 years = 1/(star's mass)p-1 × 10^10
years."

http://www.astronomynotes.com/evolutn/s2.htm "Stellar Evolution" by
Nick Strobel

Sun life = 1/1^2 x 10^10 years = 10 billion years.

3-M25 life = 1/25^3-1 x 10^10 years = 16 million years.

So, the sun fuses hydrogen 6250 times longer than the 3-M25 star.


Sincerely,

Wonko

I can't believe how great this service is!  thanks!