Answer
The number could be any of
360
390
420
Step-by-step explanation
The question tells us that the numberis a multiple of 30
And when you round it to the nearest hundred, we get 400
This means the number is a multiple of 30 that is very close to 400.
Might be less or more than 400
So,the possible answers include
360
390
420
Hope thisHelps!!!