well,

here........let u=x.n v=x'

x=x'..ryt

den

y/x=1/rt3

so

dy/dt=1/rt3 x (dx/dt)

now dy/dt=1m/s

so dx/dt=rt3m/s

dx'/dt=rt3m/s

 

n relative velocity is 2rt3:I

bacteria double every 6.5 hrs

ryt

so

after 6.5 n hrs ......bacteria are100x 2^n

now for a day n a hlf

hrs =36

6.5n=36

n=36/6.5=72/13

now

bacteria =100x 2^(72/13)

rest can be done frm calculator ..lolz

fyn