If the price of a cup of coffee increases by 50 percent, the quantity demanded decreases by 50 percent. The price elasticity of demand is:

A. zero.
B. elastic.
C. unit elastic.
D. inelastic.

Answer: C

Economics

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If disposable income decreases from $1800 to $1500 and MPC = 0.75, then saving will:

A.  Increase by $225 B.  Decrease by $225 C.  Increase by $75 D.  Decrease by $75

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