Question

(易錯(cuò)點(diǎn))甲隊(duì)有32人，乙隊(duì)有8人，現(xiàn)從甲隊(duì)調(diào)出一部分人到乙隊(duì)，使甲隊(duì)人數(shù)是乙隊(duì)人數(shù)的3倍，問應(yīng)從甲隊(duì)抽調(diào)多少人到乙隊(duì)？

Answer 1

答案：
解析：

設(shè)應(yīng)從甲隊(duì)抽調(diào)出x人到乙隊(duì)，才能使甲隊(duì)人數(shù)是乙隊(duì)人數(shù)的3倍，根據(jù)題意列方程，得32－x＝3(8＋x)，解得x＝2． 答：應(yīng)從甲隊(duì)抽出2人到乙隊(duì)．

提示：

分配類習(xí)題易出現(xiàn)從甲隊(duì)抽出x人時(shí)被從甲隊(duì)總?cè)藬?shù)中減去，而在乙隊(duì)中沒有加上相應(yīng)人數(shù)情況．