SOLUTION: In a positive number of two digits, the sum of the digits is 15. If the digits are interchanged, the number is increased by 9. Find the number?

SOLUTION: In a positive number of two digits, the sum of the digits is 15. If the digits are interchanged, the number is increased by 9. Find the number?

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Question 825021: In a positive number of two digits, the sum of the digits is 15. If the digits are interchanged, the number is increased by 9. Find the number?
Answer by y6n3o9p4(20) (Show Source): You can put this solution on YOUR website!
If the number is increased by only 9 when the digits are interchanged, they must be consecutive digits. The only pair of consecutive digits that adds up to 15 is 8 and 7.
The number is 87.
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