Question

6.
years. What are their present ages?
In a two digits number the sum of the two digits is 8. If 18 is added to the number its digits are reverse
Find the number.​

Answer 1

Answer:

..............sorry

Answer 2

Answer:

35

Step-by-step explanation:

Let the digit at ones place be 'x'

Then the digit at tens place =8−x (sum of the two digits is 8)

Therefore number 10(8−x)+x=80−10x=80−9x.......(i)

Now ,number obtained by reversing the digits =10×(x)+(8−x)

=10x+8−x=9x+8

It is given that if 18 is added to the number its digits are reversed

∴ number +18= Number obtained by reversing the digits

⇒ (80−9x)+18=9x+8

98−9x=9x+8

98−8=9x+9x

90=18x

x= 90/18=5

By substituting the value of x in equation (i) we get the number

∴ Number =80−9×5=80−45=35