I believe it’s c/100.
2=20
10 divided by 2 = 5.
Multiply 5 by 20. That equals 100.
Original amount = $234
Discount = 15% of $234 = 0.15 x 234 = $35.10
Sale Price = $234 - $35.10 = $198.90
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Answer : Sale Price is $198.90
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The lists he would add would be C because 74.05 rounds to 74, 9.72 rounds to 10 and 45.49 rounds to 45 because it is closer to 45 than 46.