[tex]\text{Baseballs} =b =100.\\\\\text{Soccer balls} = s.\\\\\text{Footballs} =f\\\\b:s = 20: 1 \\\\\implies \dfrac bs = 20\\\\\\\implies \dfrac{100}s = 20\\\\\\\implies s=\dfrac{100}{20} = 5\\\\\\s:f = 25:5\\\\\implies \dfrac sf = 5\\\\\implies \dfrac 5f =5\\\\\implies f = \dfrac55 =1\\\\\text{Hence f =1, b =100, s =5}[/tex]
