Question

Anuber consist of two digits whose sum is 8 . If 18 is added to the number its digits are reversed. Find the number.​

Answer 1

Answer:

35

Step-by-step explanation:

Let digits be x and y

Number = 10x+y

Reversed Number = 10y+x

As per ques.

x+y = 8 --- (i)

10x+y +18 = 10y+x

=> 9x-9y = -18

=> x-y = -2 ----(ii)

Adding (i) and (ii)

2x =6

x=3

so y =5

so number is 35

Answer 2

Step-by-step explanation:

let the numbers be x, y

x+y=8...........(1)

10x+y+18=10y+x

9x-9y=-18

x-y=-2..........(2)

solve (1) and (2)

then u get,

2x=6

x=3

substitute x in y

3+y=8

y=5

xy=35