Question

ugle
A two-digit integer is divisible by 5 but not by 10. If the digits are reversed,
the new number is 18 more than the original. What is the integer?​

Answer 1

Answer:

x=3

Explanation:

Flip the number to get 10y+x = 10*5 + x = 50+x

This new number is 18 larger than the old one, so,

(new number) = (old number) + 18

50+x = 10x+5+18

let's solve for x

50+x = 10x+5+18

x+50 = 10x+23

x+50-x = 10x+23-x

50 = 9x+23

50-23 = 9x+23-23

27 = 9x

9x = 27

9x/9 = 27/9

x = 3