[問題] 濤濤數學三
麻煩高手幫我一下
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
我怎麼算都算到小數耶><
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
我自己選d
希望有人可以幫忙一下 感恩
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