[tex]\frac{x}{y} : \frac{z}{t} =\frac{x}{y} \times \frac{t}{z} \\a) \frac{3}{4} : \frac{2}{5}=\frac{3}{4} \times \frac{5}{2} =\frac{15}{8}[/tex]
[tex]b) \frac{4}{7}:\frac{5}{11} =\frac{4}{7} \times\frac{11}{5}=\frac{44}{35}[/tex]
[tex]c) \frac{7}{25} :\frac{23}{25} =\frac{7}{25} \times\frac{25}{23} =\frac{7}{23}[/tex]
[tex]d)\frac{3}{17} :\frac{8}{17} =\frac{3}{17} \times\frac{17}{8} =\frac{3}{8}[/tex]
[tex]e)\frac{8}{75} :\frac{11}{25}=\frac{8}{75} \times\frac{25}{11} =\frac{8}{33}[/tex]
[tex]f)\frac{13}{36}:\frac{13}{11} =\frac{13}{36} \times\frac{11}{13} =\frac{11}{36}[/tex]
[tex]g)\frac{16}{19} :\frac{16}{47} =\frac{16}{19}\times\frac{47}{16} =\frac{47}{19}[/tex]
[tex]h)\frac{66}{13} :\frac{33}{5} =\frac{66}{13} \times\frac{5}{33} =\frac{10}{13}[/tex]
