Question

If the average life of a person is taken as 100 sec. The age of the universe on this scale is of the order
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Ans. Fifteen sec./life time = 100 years / universe age
15/100=100×12×30×24×60×60 / universe age
Universe age = 100×12×30×24×60×60×100/15
= 20736000000
= 2.07×10^10 sec.
I have little bit confusion in that answer
Why we taken 15 in this answer
Please help

Answer 1

And is wrong because that cannot be calculated