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一天晚上,我和爸爸妈妈一起做仰卧起坐。忽然,妈妈问我一个问题:今天,妈妈做了15个仰卧起坐,爸爸做了40个,明天起妈妈每天多做2个,爸爸每天多做1个,那几天之后妈妈可以追上爸爸?我想了半天也没有想出来。突然,我一拍脑袋,想到了一个办法:我只要把爸爸妈妈每天各做了几个俯卧撑写下来,不就知道了么。我立刻动手写了起来,10分钟后我终于写完了。我数了数,再过26天妈妈就能追上爸爸了。我欢呼着去告诉爸爸,可爸爸却愁眉苦脸地说:“我算出来的可是25天呀,怎
One night, I did sit-ups with Mom and Dad. Suddenly, my mother asked me a question: Today, my mother made 15 sit-ups, my father made 40, tomorrow, mother to do more than 2 daily, my father do more than one day, that a few days later, my mother can catch up with my father I thought for a long time did not come up. Suddenly, I patted my head and came up with a solution: I just wrote a few pushups for Mom and Dad each day, and I did not know it. I immediately started writing, after 10 minutes I finally finished. I count the number of, another 26 days, my mother will be able to catch up with my father. I cheer to tell my father, but my father was sad face to say: ”But I figure it out, but 25 days, how