Lauren sent 65 + 10 = <<65+10=75>>75 pieces of mail on Tuesday.

He sent 75 - 5 = <<75-5=70>>70 pieces of mail on Wednesday.

And sent 70 + 15 = <<70+15=85>>85 pieces of mail on Thursday.

Therefore, he sent 65 + 75 + 70 + 85 = <<65+75+70+85=295>>295 pieces of mail.

# Answer

295
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Lauren sent 65 pieces of mail on Monday, 10 more pieces of mail on Tuesday than on Monday, 5 fewer on Wednesday than on Tuesday, and 15 more pieces of mail on Thursday than on Wednesday. How many pieces of mail did Lauren send?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
295
Lauren sent 65 pieces of mail on Monday, 10 more pieces of mail on Tuesday than on Monday, 5 fewer on Wednesday than on Tuesday, and 15 more pieces of mail on Thursday than on Wednesday. How many pieces of mail did Lauren send?
train