成大經濟考古題 - 經濟

成大財金97經濟考題
題目為
An increase in Meta's wealth from $3000 to $6000 raises her utility
from 80 units to 100. If she is averse, with a wealth of 9000
her utility is might be


A)99 units
B)114 units
C)120 units
D)126 units


答案是B 但我怎麼算都是接近，卻不是正確答案！？



請問有人會解嗎？











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