Answer:
Ace will work 88 problems correctly out of 100.
Explanation:
Given that:
Ace worked out 22 problems out of his 25 activities 
Ratio = 22:25 
If the number of problems are 100, then x be the number of problems correctly solved by Ace.
Ratio = x : 100
The relationship is proportional.
22:25 :: x:100
Product of mean = Product of extreme 
25x = 22*100
25x = 2200

Hence,
Ace will work 88 problems correctly out of 100.