Ralph, there are different ways to do this problem, but let's do it this way:
The question here is what percent of 69 is 60, because 69 is 100%.
In this case, we set is/of = p/100, with p being the percentage we are looking for.
60/69 = p/100
Cross multiplying, we get 69p = 6000
Solving for p, we get p = 87%.
Hope this helps!
     
     
            