Question 207912
Let x = 100's digit (1st digit)
Let y = 10's digit
Let z = units (last digit
:
Write an equation for each statement:
:
": a three digit whole numbers last digit is three times its first digit."
z = 3x
For z to be a single digit, x can only be 1, 2, or 3
:
"its first digit is two times its second digit."
x = 2y
x has to be an even number if y is multiplied by 2
:
That leaves x=2
then
y = 1
and
z = 3(2) = 6
:
 what is the number. 216
:
Make sense?