The number which is 9 times as much as the number 400 is number 3600. The option C is the correct option.
What is n times of a number?
The meaning of n times of a number is that, how many times a number n is required to bring the result as the other number.
The number which is 9 times as much as 400 has to be found out. Let suppose this number is n.
To find the value of n, we have to multiply the number 400 with the number 9. Thus,
[tex]n=400\times 9\\n=3600[/tex]
The value of n is 3600.
Thus, the number which is 9 times as much as the number 400 is number 3600. The option C is the correct option.
Learn more about the multiplication of two number here;
https://brainly.com/question/18248493
