原題翻譯如下:
stan小朋友被要求用一個(gè)大數(shù)減去一個(gè)小數(shù),可是他把這兩個(gè)數(shù)加起來了,結(jié)果加起來后,得數(shù)和正確答案相差120,如果大數(shù)比小數(shù)多280,那么這兩個(gè)數(shù)的乘積是多少呢?
解題如下:
設(shè)小數(shù)是x,大數(shù)就是280+x,合是280+x+x,差是280+x-x,合減差等于120,所以280+x+x-（280+x-x）=120,解得x=60,所以小數(shù)是60,大數(shù)是340,兩數(shù)相乘就是20400.
誰幫我解一道英文數(shù)學(xué)題
誰幫我解一道英文數(shù)學(xué)題
Stan was supposed to subtract a small number from a big number.He added them instead. The difference in Stan's answer and the correct was 120.If the big number was 280 more than the small number, what was the product of the two numbers?
Stan was supposed to subtract a small number from a big number.He added them instead. The difference in Stan's answer and the correct was 120.If the big number was 280 more than the small number, what was the product of the two numbers?
數(shù)學(xué)人氣：742 ℃時(shí)間：2020-03-10 18:17:21
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