妈妈今年40岁,小红的年龄是妈妈的3/10,又正好是外婆的1/6,小红的外婆今年几岁?
妈妈今年40岁,小红的年龄是妈妈的
,又正好是外婆的
,小红的外婆今年几岁?
数学人气:828 ℃时间:2019-10-23 14:49:30
优质解答
40×
÷
,
=12÷
,
=72(岁);
答:小红的外婆今年72岁.
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