I think it's a fancy way of saying your answer is four times too high.
"by a factor of " is used commonly to mean the same as "multiplied by" or "divided by." If x is INCREASED by a factor of 4, it becomes 4x. If x is DECREASED by a factor of 4, it becomes x/4.
4.
Multiply by 1/4.
The answer to this question is x4 easy right?!
If you mean: 8 12 16 and 10 15 20 then it is 4 to 5
4
2.25
if you mean common factor then it is 4
The absolute value of 3 over 4 is less than one and so there is no representation as a mixed number.
It means that the number is divided by 4.
It is 4.
4