Answers

2016-03-07T16:04:34+05:30
Number:10y+x reverse:10x+y Acc to ques; 10y+x+10x+y=121 11x+11y=121 X+y=11(dividing 11 on both the side)
0
2016-03-07T17:16:36+05:30
Units digit - x
Tens digit - y
For first number, 10y + x
For second number, 10x + y
Now its given that,
10y + x + 10x + y = 121
11x + 11y = 121
1 5 1