###Human: Ned opens a left-handed store.  He sells left-handed mice.  They cost 30% more than normal mice.  He sells 25 a day and his store is open every day except Sunday, Thursday, and Friday.  If normal mice cost $120 how much money does he make a week?, ### Assistant: The left-hand mice cost 120*.3=$36 more than right-handed ones
So they cost 120+36=$156
So he makes 156*25=$3900 a day
The store is open 7-3=4 days a week
So in a week, he makes 3900*4=$15,600 
 So the answer is :  15600