Question

A person spends ten thousand rupees per second.how many years will it take approximately to spend one mole of rupees

Answer 1

one mole of rupees = 6.023 × 10^23
sec to spend one mole of rupees;
= 6.023 × 10^23/10000
=6.023 × 10^19 seconds

1 year = 60 × 60 × 24 × 365 seconds
= 3153600 sec

1 sec = 1/3153600 years
6.023 × 10^19 sec = 1/3153600 × 6.023 × 10^19
= 6023/31536 × 10^14
= 0.1909 × 10^14
= 19.09 × 10^12 years