Oscar has elected to have 23% of his federal income tax withheld as state income tax. If $154.00 was withheld as federal income tax on his last paycheck, how much will be withheld from his paycheck for income tax in all?

First find the state income tax withheld: 23% of $154.00 is 0.23 × $154.00 = $35.42. Add that to the $154.00 withheld for federal income tax: $154.00 + $35.42 = $189.42 total. The correct choice is $189.42.

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