Discussion
In a three-digit number the digits add to 16, the hundreds digit is three times the units digit, and the tens digit is one more than the units digit. The number is:
Answer: C
Let the units digit be \(u\). Then the hundreds digit is \(3u\) and the tens digit is \(u + 1\). Their sum is \(3u + (u+1) + u = 5u + 1 = 16\), so \(u = 3\), the tens digit is 4 and the hundreds digit is 9. The number is 943.
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