Answer:
[tex]25\%[/tex]
Step-by-step explanation:
we know that
[tex]44\frac{ice\ cream}{minute}[/tex] ------> represent the [tex]100\%[/tex]
so
by proportion
Find what percent did the speed of the machine increase
[tex]\frac{100}{44}\frac{\%}{ice\ cream}=\frac{x}{55-44}\frac{\%}{ice\ cream} \\ \\x=(55-44)*100/44\\ \\x=11*100/44\\ \\x=25\%[/tex]