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Suppose that in a month the price of a cup of coffee increases from$1 to$1.50. At the sametime, the quantity of cups of coffee demanded
Suppose that in a month the price of a cup of coffee increases from$1 to$1.50. At the sametime, the quantity of cups of coffee demanded decreases from 200 to 190. The price elasticity of demand for cups of coffee(calculated using the midpointformula) isapproximately:
A.
0.13.
B.
7.8.
C.
20.
D.
0.5.
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