53 - 60 = 7 millions difference
So since its 1 million per year then they will get that population of 60 in 7 years which is 1997.
so we make an expression
let x represent how many the Cincinnati won
x + 5.2x = 31
solve for x
6.2x = 31
x = 31/6.2 = 5
for Cincinnati : 5
for yankees : 5.2*5 = 26