Cigarette Question
Today I had too many cigarettes and while taking the puffs one math question came to my mind
If a man's Life expectancy decreases by 0.001% with every cigarette then at what age the man 'll die if he starts smoking at the age of 20 and takes 10 cigarette per day? (Approx. age = you can consider the man to be dead when 99% Life expectancy is gone)
or the man 'll never die
Hi,
Here s my Ans
for 1 cig/day---0.01% decreases
for 100 days ---1% decreases
for 9900 days--99% decrease.( the man dies at this point).
So 9900 days approx to 27.12 yrs.
So the man dies at the age of 47 itself.
Did I make a mistake?
-Deepak.
Its wrong
first of all in the question its given 10 cig/day
Then you cant write some thing like
for 1 cig/day---0.01% decreases
for 100 days ---1% decreases
this is like compound interest...
3.65 % u die every year .. wat abt leap year? then it becoms 3.66%
so the formula becomes
.01 = (1 - 3.65/100) ^ n.... i am not considering Leap year
and we have to find n .....
.01 = .9635 ^ n
n is between 120 and 125 ... so the man will die when he becomes 140 to 145.
So that tells us that we should have 10 cigs a day!!!!!!!!!!!!
life expectancy is 55 considering an engg student in mumbai it gets reduced to 50 so u get to live loooooooooong :)
Jokes apart Sri pls dont even think abt going that faar....
Tell me if I goofed up the stuff??
regards