Write an algebraic expression to answer the question and simplify.A stack of currency contains 60 bills. In the stack are x $20 bills. The rest are $50 bills. How much money is in the stack of bills?
A. 20x + 50(60 - x); -30x + 3000 dollars
B. 20x - 50(60 - x); 70x - 3000 dollars
C. 20x + 50(60 - x); 30x + 3000 dollars
D. Cannot be solved
Answer: A
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