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