Respuesta :
[tex]\bf a)\\\\
\cfrac{girls}{boys}\qquad girls:boys\qquad \cfrac{14}{15}\\\\
\cfrac{boys}{girls}\qquad boys:girls\qquad \cfrac{15}{14}\\\\
-------------------------------\\\\
b)\\\\
\textit{the whole class is 14+15 students, or 29}\qquad \cfrac{\stackrel{girls}{14}}{\stackrel{class}{29}}\qquad \cfrac{\stackrel{boys}{15}}{\stackrel{class}{29}}\\\\
-------------------------------\\\\
c)\\\\
\cfrac{14}{29}\implies \cfrac{14\div 14}{29\div 14}\implies \cfrac{1}{2.07}\implies 1:2.07[/tex]