※ 引述《qqopqqop (p )》之铭言： : 麻烦高手帮我一下 : 18 Last year the price per share of Stock x increased by k percent and : the earnings per share of stock x increased by m percent, where k : is greater than m. By what percent did the ration of price per share to : earnings per share increase, in terms of k and m? : ans 100(k-m)/(100+m)percent : 14 How many seconds will it take for a car that is traveling at a constant : rate of 45 miles per hour to travel a distance of 22 yards? 1 mile=1160yards : ans10 : 我怎麽算都算到小数耶>< : 15 If n and k are positive integers, is n/k an even integer? : a n is divisible by 8 : b k is divisible by 4 : ans E : 我自己选d : 希望有人可以帮忙一下 感恩 NO.18 请参照1693 NO.20 你是不是看错数字啦? 我查过1mile=1760yards喔! NO.30 举例: 当n=8,k=8时，n/k=1 不是偶数 n=16, k=8时，n/k=2 为偶数 因此不能确定# --

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