12(13/18) + 16(11/27) - 10(5/9) = _________?
Correct answer: B. 1831/54
- A. 182/3
- B. 1831/54
- C. 18
- D. 201/2
Explanation
Treating the terms as mixed numbers, use denominator 54: 12 13/18 = 687/54, 16 11/27 = 886/54, and 10 5/9 = 570/54. Thus 687/54 + 886/54 - 570/54 = 1003/54 = 18 31/54, so option b is correct. A common mistake is option c, 18, caused by dropping the fractional remainder.
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