What is the 4-digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by three?

We'll call this number

We have ⇒

Since is divisible by 5, it is either 0 or 5

But it can't be 0, because then would be 0

So and

Now I'm assuming that the second and third digits are adding to three times the last digit.

So ⇒

We have a number of options:





So the possibilities are:
1695
1785
1875
1965

(If there were another detail we could narrow down the choices further, but otherwise we have all these options.)

hope it is correct if not i'm srry i tried to