A tourist does not have to pay tax on the first $600 of goods he purchases in Country B, but does have to pay a 10 percent tax on the portion of the total value that is in excess of $600. What tax must be paid by a tourist if he buys goods with a total value of $1720?
Choose the correct choice from the following answers
A) $ 112.00	B) $ 64.80	C) $ 90.00	D) $ 100.80	E) $ 154.80

Rationale: "correct answer : a the tourist must pay tax on $ 1720 - $ 600 = $ 1120 . thus , the amount of tax he has to pay is 0.1 ( $ 1120 ) = $ 112 . the correct answer is a ."
Answer: A