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10 calculations to know

8. Purchasing Power

July 22, 2008

My family's monthly expense is Rs 50,000. At an inflation rate of 5 per cent, how much will be the purchasing value of that amount after 20 years?

Inflation increases the amount you need to spend to fetch the same article and in a way reduces the purchasing power of the rupee. Here, Rs 50,000 after 20 years at an inflation of 5 per cent will be able to buy goods worth Rs 18,844 only.

Formula: Reduced amt.= Present amt. / (1 + inflation) ^no. of yrs

Type in: =50000/(1+5%)^20 and hit enter. You will get Rs 18,844, which is the reduced amount.

Image: Indian customers look at gold jewellery items on display at the Tribhovandas Bhimji Zaveri store in Ahmedabad. | Photograph: Sam Panthaky/AFP/Getty Images

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