if (DeltaP)/P =0.2 and price elasticity is (-) 2. calculate the percentage fall in demand. Also calculate the original expenditure if new expenditure is₹ 180 at price of₹ 6.

if (DeltaP)/P =0.2 and price elasticity is (-) 2. calculate the percen

1.	if (DeltaP)/P =0.2 and price elasticity is (-) 2. calculate the percentage fall in demand. Also calculate the original expenditure if new expenditure is₹ 180 at price of₹ 6.
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