The tens digit of a two-digit number is two more than its unit digit. The two-digit number is 7 times the sum of the digits. Find the units digits? Choose the correct option:
A) 1
B) 2
C) 3
D) 4
E) 5
Let the two-digit number be 10a + b   a = b + 2 --- (1)   10a + b = 7(a + b) =&gt; a = 2b   Substituting a =   2b in equation (1), we get   2b = b + 2 =&gt; b = 2   Hence the units digit is: 2.   ANSWER:2
<result>B</result>
The tens digit of a two-digit number is two more than its unit digit. The two-digit number is 7 times the sum of the digits. Find the units digits?