图书管理运进一批新书,第一天借出百分之32,第二天借出百分之45,只是还剩23本,图书馆运进新书多少本?
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图书管理运进一批新书,第一天借出百分之32,第二天借出百分之45,只是还剩23本,图书馆运进新书多少本?
图书管理运进一批新书,第一天借出百分之32,第二天借出百分之45,只是还剩23本,图书馆运进新书多少本?
图书管理运进一批新书,第一天借出百分之32,第二天借出百分之45,只是还剩23本,图书馆运进新书多少本?
X*32% + X*45% +23 =x
0.77X + 23 =x
23 =0.23x
得出X=100
即图书馆运进新书100本!
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100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000本。
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[23/(1-45%)]/(1-32%)可是解出来不是整数,我想这道题有错误!