Mrs. Brown's $50 bills amount to $50 x 3 = $<<50*3=150>>150.

Her $10 bills amount to $10 x 2 = $<<10*2=20>>20.

So Mrs. Brown's utility bills cost $150 + $20 = $<<150+20=170>>170.

# Answer

170
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Mrs. Brown paid her utility bills with 3 $50 bills and 2 $10 bills. How much are her utility bills?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
170
Mrs. Brown paid her utility bills with 3 $50 bills and 2 $10 bills. How much are her utility bills?
train