###Human: Jame gets 20 singing lessons.  He gets the first lesson free and after the first 10 paid lessons he only needs to pay for every other lesson.  Each lesson is $5.  His uncle pays for half.  How much does James pay?, ### Assistant: The first lesson is free.
The lessons 2 to 11 cost 10*$5=$50.
He then had 9 remaining lessons where he had to pay for every other one.
So he pays for lessons 13,15,17&19 = 4 lessons.
Those lessons cost 4*$5=$20.
So in total, the cost was $50+$20=$70.
So he paid $70/2=$35. 
 So the answer is :  35