Mathematics
NULL
Medium
Question
Three consecutive odd integers increase so that the sum of the last two is 13 more than the first. Find the three integers.
A
9, 11, 13
B
11, 13, 15
C
13, 15, 17
D
7, 9, 11
✓ Official correct answer
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A
9, 11, 13
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B
11, 13, 15
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C
13, 15, 17
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D
7, 9, 11
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Explanation
Let them be n, n+2, n+4. Then 2n+6 = n+13 ⇒ n = 7 ⇒ 7, 9, 11.