Question 314696
1....t+u=16
.
the number is 10t+u
if this is reversed it becomes 10u+t
this is 18 more than the original number
..
10u+t = 10t+u+18
9u-9t=18
2....u-t=2

Add equation1 & 2

t+u+u-t=16+2
2u=18
u=9
so t= 7
The number = 97