# A consumer buys 18 units of a good a price of Rs 9 per unit the elasticity of demand for the good is one how many units the consumer will buy at the price of Rs 10 per unit calculate

Moreover

Second explanation to this can be as follows

As Price elasticity of demand here is = 0, which means total expenditure remains contant

Current expenditure = Current no. of units X Current price per unit

= 18 X 9

= Rs. 162

As Expenditure Should be same

Therefore, New quantity will be -

Expenditure = New Quantity to be purchased X Price per unit

162 = New Quantity to be purchased X 10

__162__= New Quantity to be purchased

10

New Quantity to be purchased = 16 units ( as answer is 16.2 , but units can not be in decimals so it is to be rounded off.)

Regards

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