Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Libby has 160 quarters in her piggy bank. She has to pay $35 to replace her sister’s dress that she borrowed and ruined. After replacing the dress, how many quarters will Libby have left?

### Response:
There are 4 quarters in every dollar, so $35 x 4 = <<35*4=140>>140 quarters.
Libby has 160 quarters – 140 quarters to repay her sister = 20 quarters left.
#### 20