Question

How many year would it take to spend Avogadro's number if rupees at the rate of 10 lac rupee per second?

Plz post a detailed solution
Thanks:)

Answer 1

Avogadro's number = 6.023 x 10^23
rate of spending = 10,00,000 rupees in 1sec
60 secs = 1min
60 mins = 1 hr
24hr = 1 day
365 days = 1 year

6.023 x 10^23 rupees x (1sec /10,00,000rupees) x (1min/60 secs) x ( 1hr /60 mins) x (1day/24hrs)x (1 year/365 days)
=19098807711.82 years
= 1.909 x 10^10 years