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Every kid in Mr. Levans's 3rd grade class made a valentine for every kid in the class, including him- or herself. If the class made a total of 484 valentines, how many kids are in the class?

2 Answers

3 votes
I would say 22 i first looked at amount of average kids in a class then tried every number close. 484/22=22
User Tamikha
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Let the total number of kids in Mr. Levans' 3rd grade class be x.

We know that each kid in the class made a Valentine for every kid in the class, including himself or herself.

So, the first kid made x Valentines. Likewise, the second kid too made x Valentines. If we go on so on and so forth, we will note that even the last, or the
x^(th) kid made x Valentines too. Thus, this way we know that every kid made x Valentines.

Therefore, the total number of Valentines made are
x* x. It is given in the question that the number of Valentines made is 484.

Therefore, from the above information we conclude that:


x* x=x^2=484

To find x we will have to take the square root of both sides. Which will give us:


√(x^2)=√(484)


x=22

Thus, the number of kids in the class is 22.


User Sam Hokin
by
6.9k points
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