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信息发布者:
最简分数有:$\frac {2}{3},$$\frac {7}{18},$$\frac {31}{91};$
$\frac {12}{16}=\frac {3}{4},$$\frac {12}{10}=\frac {6}{5},$$\frac {6}{30}=\frac {1}{5}$
3
$\frac{1}{6}$
$\frac{1}{8},$$\frac{3}{8},$$\frac{5}{8},$$\frac{7}{8}$
$\frac{8}{1},$$\frac{8}{3},$$\frac{8}{5},$$\frac{8}{7}$
$\frac{1}{4}$
$\frac{1}{3}$
$\frac{3}{10}$
$\frac{2}{5}$
$\frac{1}{40}$
B
C
C
$12 - 8 + 5 = 9($小时$),$
$9÷24 = \frac {9}{24} = \frac {3}{8}$
答:她今天有$\frac {3}{8}$的时间在医院。
$52÷80 = \frac {52}{80} = \frac {13}{20},$
$80 - 52 = 28,$
$28÷80 = \frac {28}{80}= \frac {7}{20}$
答:已经传输的和未传输的分别占文件总量
的$\frac {13}{20},\frac {7}{20}。$
$30÷65 = \frac {30}{65} = \frac {6}{13},$
$15÷65 = \frac {15}{65} = \frac {3}{13},$
$20÷65 = \frac {20}{65} = \frac {4}{13}$
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