Hello! 
We know our denominator is 60, because that is the total amount of cities. Now, we must find our numerator: 
3 + 29 = 32 
Fraction: 32/60
You can simplify this by dividing both the numerator and denominator by 4: 
32 ÷ 4 = 8 60 ÷ 4 = 15 
FRACTION (SIMPLIFIED): 8/15