Answer:
[tex]\text{a})[/tex] [tex]50[/tex]
[tex]\text{b})[/tex] [tex]110[/tex]
Step-by-step explanation:
[tex]\text{a})[/tex] If [tex]1[/tex] potato is enough for [tex]2[/tex] people, than [tex]\dfrac{100}{2}[/tex] or [tex]50[/tex] potatos are enough for [tex]100[/tex] people.
[tex]\text{b})[/tex] [tex]55\cdot2=110[/tex]