Question

a number consists of two digits whose sum is8.If 18 is added to the no.its digit are reversed . find the number

Answer 1

Let the no. Be 10 X+Y
X+Y=8 SO Y=8-X
A.T.Q
18+10X+Y=10Y+X
18=9Y-9X
2=Y-X
2=8-X-X
6=2X
X=3
SO, Y= 2+3=5
The required no. is 35