Respuesta :

5 pencils to 2 pens is 5/2 in simplest form
ratio of 5 pencils to 2 pens would be like 5/2 as many pencils as pens or 2/5 times as pens as pencils 
5 + 2 = 8 parts in total so 5/8 are pencils and 2/8 are pens