Based on the context and the answer, generate a question. 

Context: One of my friend 's who 's fiance is also a commercial pilot , came over last night ; and we had a girly night in . It was absolutely lovely to have some fun company , and the time flew ! Then today , as a treat to my boys for beng little stars for me and helping me out in my sleep deprived state , I took them to a massive adventure playground .

Answer:

Six years old



How old may the boys be ?