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 --

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