Julia played tag with 22 kids on monday, 42 kids on tuesday and 28 kids on wednesday. How many kids did she play with on tuesday and wednesday?
Julia played tag with 22 kids on Monday. 
On Tuesday, she played with 42 kids. This means that she played with 20 more kids on Tuesday than she did on Monday. 
On Wednesday, she played with 28 kids. This means that she played with 14 more kids on Wednesday than she did on Tuesday. 

Therefore, Julia played with 42 kids on Tuesday and 28 kids on Wednesday.