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I have 3 times as many twenty-dollar bills as five-dollar bills, and no other money.
If the value of my five-dollar bills is $35.00, how much money do I have in total.
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1. The number of the $5 banknotes is = 7.
2. The number of the $20 banknotes is 3*7 = 21.
3. The amount in $20 banknotes is 21*20 = 420 dollars.
4. In all, there are 420 + 35 = 455 dollars.
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