鸡占52%,鹅占18%,鸭占30%.已知鸭比鹅多360只,鸡有多少只?
人气:473 ℃ 时间:2020-06-09 07:13:57
解答
全部有:
360÷(30%-18%)
=360÷12%
=3000(只)
鸡有:
3000×52%=1560(只)
综合式:
360÷(30%-18%)×52%
=3000×52%
=1560(只)
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