Answer:
When checking if a number is divisible by 3, the easiest way to check this is to sum up the digits in 15 and if that resulting number is divisible by 3, then 15 is too. We can see that the sum of the digits in this case is 6 and this number IS divisible by 3, which means that 15 is also divisible by 3.
Step-by-step explanation:
Well for me it is yes every number that is divisible by 3 is also divisible by 15 only by a remainder
I hope this helps
