The sum of the digits of a two digit number is (1/7) of the number. The units digit is 4 less than the tens digit. If the number obtained on reversing its digit is divided by 7, the remainder will be ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 ie 6.
(a + b) = 1/7 [10a + b]
7a + b = 10a + b
3a = 6b
a : b = 2 : 1
a = 8, b = 4
No. = 84
Reverse = 48
48/7 = 
Remainder = 6