Question

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

Answer 1

A person spends Rs. 10,000 per second.
In one year, he will spend = Rs. (10,000×3600×24×365) = Rs. 3.1536×10¹¹
1 mole rupees = Rs. 6.022×10²³ 

$number\ of\ years= \frac{total\ rupees}{rupees\ spent\ in\ one\ year} =\frac{6.022*10^{23}}{3.1536*10^{11}} =\boxed{1.91*10^{12}\ }$

So it will take approximately 1.91×10¹² years to spend 1 mole rupees.

Answer 2

Q. A person spends ₹10,000 per second. How many years will it take approximately to spend one mole of rupees?

ANSWER :-

In one year, he will spend

= Rs. (10,000×3600×24×365)

= Rs. 3.1536×10¹¹

1 mole rupees = Rs. 6.022×10²³

No of years = Total ₹

―――――――――――――

₹ spend in 1 year

6.022 × 10²³

= ――――――――――― = 1.91 × 10¹²

3.1536 × 10¹¹

So it will take approximately 1.91×10¹² years to spend 1 mole rupees.

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