第41页

信息发布者:
$\frac{3}{4}$
$\frac{3}{4}$
$\frac{1}{6}$
$\frac{6}{7}$
$2$
$\frac{4}{7}$


否,
​$\frac {25}{175}=\frac {5}{35}=\frac {1}{7}$​
否,
​$\frac {76}{114}=\frac {38}{57}=\frac {2}{3}$​
17
$\frac{2}{3}$
$\frac{11}{6}$、$\frac{7}{4}$、$\frac{9}{5}$、$\frac{5}{4}$、$\frac{15}{14}$
$\frac{1}{12}$、$\frac{5}{12}$、$\frac{7}{12}$、$\frac{11}{12}$
$\frac{1}{24}$、$\frac{3}{8}$
$\frac{3}{4}$
$\frac{3}{40}$
$\frac{3}{25}$
$\frac{9}{2}$
A
C
D
$12-8+5=9$(时)
$9÷24=\frac{3}{8}$
答:她一天在医院的时间占全天的$\frac{3}{8}。$
$160+105+40=305$(篇)
风:$160÷305=\frac{32}{61}$
雅:$105÷305=\frac{21}{61}$
颂:$40÷305=\frac{8}{61}$
答:风占全书的$\frac{32}{61},$雅占全书的$\frac{21}{61},$颂占全书的$\frac{8}{61}。$
$\frac{15}{87}$