Question

the tens digit of a two digit number is 3 less than its unit digit and the number is 4 times the sum of the digits. what is the number?

Answer 1

let "t" be the tens digit
let "u" be the unit digit
let "x" be the number

t=u-3
x=4(t+u)

Answer 2

now for some reasoning
x must be a multiple of 4, thus meaning that u must be even

the lowest number u can be is 4, any lower and the problem wouldn't make sense

Answer 3

multiple of 4 means u must be even

Answer 4

thanks anyway. the answer is 36. :)

Answer 5

right