3 people run for president.  John manages to capture 150 votes. James captures 70% of the remaining vote.  If there were 1150 people voting, how many more votes did the third guy get than John?
There were 1150-150=<T>subtract(1150, 150)=1000 people who didn't vote for John
That means James got 1000*.7=<T>multiply(1000, 0.7)=700.0 votes
So the other candidate got 1000-700=<T>subtract(1000, 700)=300 votes
This means he got 300-150=<T>subtract(300, 150)=150 more votes than John.
