Answer :
Answer: 150 people voted in the election.
Step-by-step explanation:
Let x = Total number of votes.
Mason got [tex]\dfrac{x}{3}[/tex] votes.
Isabella got 40 votes, Amelia got 60 votes.
Then,
Combined votes = [tex]40+60+\dfrac{x}{3}=x[/tex]
[tex]100=x-\dfrac{x}{3}\\\\100=\dfrac23x\\\\ x=100\times\dfrac32\\\\ x=50\times3\\\\ x=150[/tex]
Hence, 150 people voted in the election.