小站SAT频道为大家2018年4月9日的SAT数学每日一练:考察根据生活实际抽象出方程的能力。配有答案,解析,众考生,慢慢操练吧。
是关于Julio在菜市场卖菜的数学故事
While shopping at his local vegetable market, Julio purchases 5/4 pounds of zucchini and 9/4 pounds of kale. He spends a total of $7.50 on these two types of vegetables. Which of the following equations best models the cost per pound, in dollars, of zucchini, z, and the cost per pound, in dollars, of kale, k, that Julio purchases?
A.(14/4)(z+k)=7.50/2
B.(5/4)z+(9/4)k=7.50/2
C.(14/4)(z+k)=7.50
D.(5/4)z+(9/4)k=7.50
答案:D
解析:
Choice D is correct.
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