四年級(jí)植樹(shù)問(wèn)題的奧數(shù)題
題目:圓湖的周長(zhǎng)1350米,在湖邊每隔9米種柳樹(shù)一棵,在兩棵柳樹(shù)之間種桃樹(shù)2棵,兩棵桃樹(shù)之間的.距離是().桃樹(shù)和柳樹(shù)各植()、()棵.
分析:在兩棵柳樹(shù)之間種桃樹(shù)2棵,兩棵桃樹(shù)之間的距離是:9÷(2+1)=3(米);柳樹(shù)的間隔數(shù)是:1350÷9=150(個(gè)),那么桃樹(shù)有:2×150=300(棵),柳樹(shù)有150棵,據(jù)此解答.
解答:解:9÷(2+1)=3(米),
柳樹(shù)的間隔數(shù)是:1350÷9=150(個(gè)),
柳樹(shù):150棵;
桃樹(shù):2×150=300(棵);
答:兩棵桃樹(shù)之間的距離是3米.桃樹(shù)和柳樹(shù)分別植300棵、150棵.
故答案為:3米,300,150.
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