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1

8

25

4

5

13

7

5

9

13

14

8

72

$\frac{1}{3}$

$=24×\frac{21}{8}×\frac{5}{21}$

$=63×\frac{5}{21}$

$=15$

$=(\frac {3}{5}÷\frac {1}{2})×(\frac {5}{24}÷\frac {5}{24})$

$=\frac{6}{5}×1$

$=\frac{6}{5}$

$=\frac {19}{26}×\frac {55}{38}×\frac {5}{11}$

$=\frac {55}{52}×\frac {5}{11}$

$=\frac{25}{52}$

$=(\frac {5}{8}÷\frac {5}{8})×(\frac {2}{13}×\frac {2}{3})$

$=1×\frac {4}{39}$

$=\frac{4}{39}$

$甲倉(cāng)庫(kù):128÷2÷\frac{1}{5}=320(噸)\ $

$乙倉(cāng)庫(kù):320-128=192(噸) $

$答：甲倉(cāng)庫(kù)存糧320噸,乙倉(cāng)庫(kù)存糧192噸。$

$20÷\frac{2}{3}×\frac{2}{5}=12(人) $

$答：美術(shù)組有12人。$

$60×5÷\frac{2}{3}=450(千米) $

$答：A、B兩地相距450千米。$

$6÷7=\frac{6}{7}(千克)$

$\frac{6}{7}×8÷\frac{1}{7}=48(千克)$

$答：這桶水有48千克。$

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