问问这个微观经济的问题The quantity of pencils sold is 1000 at the unitprice $0.5.Suppose the price elasticity of demand for pencils by the initialvalue method is 2,and you would like to increase the quantity sold to 1200.Then the new price

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问问这个微观经济的问题The quantity of pencils sold is 1000 at the unitprice $0.5.Suppose the price elasticity of demand for pencils by the initialvalue method is 2,and you would like to increase the quantity sold to 1200.Then the new price
问问这个微观经济的问题
The quantity of pencils sold is 1000 at the unit
price $0.5.Suppose the price elasticity of demand for pencils by the initial
value method is 2,and you would like to increase the quantity sold to 1200.
Then the new price for pencils must be:
A) $0.05.
B) $0.25.
C) $0.30.
D) $0.45.

问问这个微观经济的问题The quantity of pencils sold is 1000 at the unitprice $0.5.Suppose the price elasticity of demand for pencils by the initialvalue method is 2,and you would like to increase the quantity sold to 1200.Then the new price
价格弹性是2,就是价格变化1%,数量就变化2%.
现在数量由1000增加到1200,增加了20%,则价格应减少10%,新的价格为0.5×（1-10%)=0.45.

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