The sum of the digits of a two-digit number is 12. The difference of the digits is 6. Find the number?  Choose the most appropriate option.
A) 12	B) 76	C) 21	D) 26	E) 39
Explanation:   Let the two-digit number be 10a + b   a + b = 12 --- (1)   If a&gt;b, a - b = 6   If b&gt;a, b - a = 6   If a - b = 6, adding it to equation (1), we get   2a = 18 =&gt; a =9   so b = 12 - a = 3   Number would be 93.   if b - a = 6, adding it to the equation (1), we get   2b = 18 =&gt; b = 9   a = 12 - b = 3.   Number would be 39.   There fore, Number would be 39 or 93.   Answer: 39
<result>E</result>
The sum of the digits of a two-digit number is 12. The difference of the digits is 6. Find the number?