The sum of a two-digit number and the number formed by reversing its digits is 132, and its digits differ by 4. If the number is greater than its reverse, what is the number?
Correct answer B. 84
Explanation
11(a + b) = 132 gives a + b = 12. With a - b = 4, a = 8 and b = 4, so the number is 84.
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