单选题The number of cheetahs on an African reserve varies directly as the number of zebras on the reserve varies, according to the equation c=kz, where c is the number of cheetahs, z is the number of zebras, and k is a constant. If there are 4 cheetahs on the reserve when there are 1,500 zebras, how many cheetahs would there be if there were 3,750 zebras?A15B14C12.5D12E10
单选题
The number of cheetahs on an African reserve varies directly as the number of zebras on the reserve varies, according to the equation c=kz, where c is the number of cheetahs, z is the number of zebras, and k is a constant. If there are 4 cheetahs on the reserve when there are 1,500 zebras, how many cheetahs would there be if there were 3,750 zebras?
A
15
B
14
C
12.5
D
12
E
10
参考解析
解析：
4=k(1,500), k=1/375; c=(1/375) ×3,7500=10.
4=k(1,500), k=1/375; c=(1/375) ×3,7500=10.
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