Wendy2017-11-28 15:46:46
WendyQ. A consumer has a budget of $30 per month to spend on two types of fruit, priced as follows: • Apples: $2.50 per pound. • Bananas: $2.00 per pound. Assuming the quantity of apples is measured on the vertical axis and bananas on the horizontal axis, the slope of the budget constraint is closest to: A. 1.25. B. –0.80. C. –1.25. 请问老师，这道题不太懂，可以解释一下吗？
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金程教育陈老师2017-11-28 15:59:32
金程教育陈老师预算线为30=2.5Qa+2Qb，又Qa（苹果量）为纵坐标，则化简为Qa=12-0.8Qb，则斜率为-0.8。
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