1、To reproduce an old photograph,a photographer charges x dollars to make a negative,3x/5 dollars for each print in excess of 10 prints,and x/5 dollars for each print in excess of 10 prints.If $45 is the total charge to make a negative and 20 prints from an old photograph.What is the value of x
A) 3 B) 3.5 C) 4 D) 4.5 E) 5
人气:465 ℃ 时间:2020-09-09 21:45:47
解答
题意是:修复一张旧照片,摄影师需要做一张底片,收 x 元,洗10张以内3x/5 元一张 (这是根据题意猜测的,因为in excess of 指超过多少张后,但是您的下一句还是这个词,那就只能想前一句是之内了)超过10张的每张x/5元.如...
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