Question

What the value of current Indian rupee 1 in the year 1780? How do you calculate ?

Answer 1

The difference between 1780 and 2020 is all the inflation that has happened. Thus, the purchasing power of 1 rupee has gone down significantly in the time period.

Let the inflation between 1780 and 2020 be x%.

Then, the value of current rupee 1 in 1780 = 1 * (100) / (100 + x)

For instance if inflation is 50%, the value becomes 1*100/*(100 + 50) = 2/3 = 0.66

(This basically means that what 1 rupee can buy now, could have been purchased with rupee 0.66 in 1780 in the example)