i am a multiple of 7

Question

i am also a multiple of 3
my units digit is half my tens digit.
what number am i?

Answer 1

3 * 7 = ?

Answer 2

What is the answer

Answer 3

I am a multiple of 7.
I am also a multiple of 3.
My unit's digit is half my ten's digit.
What number am I?

Answer: 21

Answer 4

7 goes into 21
3 goes into 21
1 is half of 2

So the answer is 21:)

Answer 5

Excellent

Answer 6

i am multiple of 20.i have 3 digits.my hundreds digit and tens digit add to make 9. half of me is less than 100.