When 2/5 of a certain number is added to the number and this sum is subtracted f

游客2024-01-12 61

问题 When 2/5 of a certain number is added to the number and this sum is subtracted from 108, the result is the original number. What is the original number?

选项 A、35
B、45
C、54
D、135/2
E、270

答案 B

解析 108减去某数与其2/5的和等于该数，问这个数是多少?
解：本题的正确答案为(B)。设该数为x，则由题意可得：108-(1+2/5)x=x so, x=45

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When 2/5 of a certain number is added to the number and this sum is subtracted f

Normallyastudentmustattendanumberofcoursesinordertograduate,and

Normallyastudentmustattendanumberofcoursesinordertograduate,and

Infact,manystudiesindicatethatafteracertainpoint,anyone’sproductivity

MorethanonemillionyoungpeopleinBritainareunemployed,thehighestnumber

Itcanbeaperfectmirrorincertainlights,andthelargertheglass,themore

这种疾病困扰着大多数以米饭为主食的东方人。ItdistressedlargenumbersofEasternpeoplewholivedmai

Iamafraidthathisphonenumberhasslippedmy______forthemoment.A、headB、

Thenumberofmembersintheclub________totwohundred.A、werelimitedB、limits

Ourpreferencesforcertaincolorsare______accordingtothepassage.[br]If

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