A number consists of two digits whose sum is 9. The number formed by reversing the digits exceed twice the original number by 18. Find the original number
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The numbers are 18, 27, 36 or 45 whose sum is 9
1. consider number 18,
(18 *2) +18 = 54
the number obtained is not reversed of 18.
2. consider number 27,
(27 * 2) +18 = 72
the number obtained is reversed of number 27
∴ The number is 27
1. consider number 18,
(18 *2) +18 = 54
the number obtained is not reversed of 18.
2. consider number 27,
(27 * 2) +18 = 72
the number obtained is reversed of number 27
∴ The number is 27
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