Question

甲乙两人原有钱数的比是5:3,甲拿出1200元给乙,甲乙两人钱数比就是3:2。原来甲有多少？

Answer 1

甲原来占总数的5/(5+3)=5/8
甲后来占总数的3/(3+2)=3/5
所以总钱数为1200÷(5/8-3/5)=48000元
所以原来甲有48000x5/8=30000元

Answer 2

设原来甲有5X元，则乙有3X元
（5X-1200）：（3X+1200）=3：2
2（5X-1200）=3（3X+1200）
10X-2400=9X+3600
X=6000
甲原有6000×5=30000（元）
乙原有6000×3=18000（元）

Answer 3

3:2=4.5:3
甲有12000元

Answer 4

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