###Human: Jerry charges $20 to pierce someone's nose and 50% more to pierce their ears. If he pierces 6 noses and 9 ears, how much money does he make?, ### Assistant: First find how much more Jerry charges to pierce one person's ears than their nose: $20 * 50% = $10
Then add that amount to the cost of nose piercing to find the total cost: $10 + $20 = $30
Then multiply that price by the number of ears he pierces to find his total earnings from ear-piercing: $30/ear * 9 ears = $270
Then multiply the price of nose-piercing by the number of noses pierced: $20/nose * 6 noses = $120
Then add the money from nose-piercing to the money from ear-piercing to find Jerry's total income: $120 + $270 = $390 
 So the answer is :  390