ADB's calculations imply almost half of India's population (47.7 per cent) was below the line in 2010. Both these estimates are based on the year 2005's purchasing power parity rates.
The recent release of the updated index for comparing the value of currencies across countries - generally known as purchasing power parity, or PPP - will have far-reaching implications.
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And with prices low, the equilibrium real exchange rate will also be low, that is to say depreciated.
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