What two digit number is a multiple of 5 and has 3 less tens than ones

25

Step-by-step explanation:

If a two digit number is a multiple of 5, then it ends with 0 or with 5.

If a two digit number ends with 0, then the number of ones is 0 and the number of tens must be 3 less that is impossible.

Hence, this two digit number must end with 5. If it ends with 5, then the number of ones is 5 and number of tens must be 5 - 3 = 2.

Therefore, the number is 25.