Question

the unit digit X is half of the tens digit of a two digit number what is the number​

Answer 1

Answer:

21y/2

Step-by-step explanation:

two digit number is 10y + x

now unit digit is half of tens digit so x = y/2

ie 10y + y/2

taking lcm = 2

so 20y + y /2

= 21y/2