有甲、乙两筐苹果,如果从甲筐取12个放入乙筐,则甲筐苹果个数是乙筐的1.2倍,已知甲筐原来比乙筐多50个苹

甲筐原来有苹果多少个?

设甲X个,乙X-50个

X-12 = 1.2*(X-50+12)
X-12 = 1.2*(X-38)
X-12 = 1.2X-45.6
45.6-12 = 1.2X-X
33.6 = 0.2X
0.2X = 33.6
X = 33.6/0.2
X = 168

甲有168个
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第1个回答  2011-01-23
设甲框为x个,乙为y个,根据题意得到
x-y=50
(x-12)/(y+12)=1.2
第2个回答  2011-01-23
设甲框x个
x-12=1.2*(x-50+12)
解得
x=168