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

Context: One night last week , Lydia and I were in the kitchen together , she emptying the dishwasher and I putting the finishing touches on supper . We were talking about school and she said that she really liked her new art teacher . I asked what he was like , and , among other things , that he was " young . " I wondered how young , and she qualified , " Well , maybe not young , but like 30 .

Answer:

Because she is a lot younger .



What may be the reason why she does n't think 30 is young ?