Question

A problem states: "There are 9 more children than parents in a room. There are 25 people in the room in all. How many children are there in the room?"

What are the unknowns in this problem?

Select each correct answer.

the total number of parents in the room

the total number of children in the room

the total number of people in the room

The total number of teachers in the room

Answer 1

\[C + P = 25\]
\[P = (9+C)\]

I believe

Answer 2

y + x =25, y= (9+x)
let x represent parents
let y represent children

Answer 3

Yes, then just solve for the children after substituting in the variables.

Answer 4

C = Children
P =Parents

\[C + P = 25\]
\[P = 9 + C\]

Then plus in your P, so you get \[C + (9+C) = 25\]
Can you solve for C from there?

Answer 5

@iTz_Sid you have the second equation a bit off. It should be C = P+9

Answer 6

There are more children

Answer 7

@jim_thompson5910 Oh yea, sorry, Wooopsies.

Answer 8

Thank u all for trying to help me...

Answer 9

can anyone help me at all?

Answer 10

plz someone help?????

Answer 11

@helpppp

Answer 12

\[(P+9)+P = 25\]
\[2P=16\]
\[P=8\]
Then plus P back in to get C because C = P+9
C = 8 + 9
C = 17

Answer 13

A problem states: "There are 9 more children than parents in a room. There are 25 people in the room in all. How many children are there in the room?"

What are the unknowns in this problem?

Select each correct answer.

the total number of parents in the room

the total number of children in the room

the total number of people in the room

The total number of teachers in the room

First and foremost, we need to choose variables to represent the unknown quantities. C is quite suitable to represent the number of students, P the number of parents. I'd choose N to represent the total number of people in the room.

Note that we are told nothing about the number of teachers who are in the room.

Note carefully: the goal of this problem is not so much to determine the exact numbers of people in each group (Children, Parents, Teachers, etc.), but rather to IDENTIFY THE UNKNOWNS.

Do we know the total number of people in the room? Yes. We're told that it's 25. Thus, "total number of people in the room" is NOT an UNKNOWN here.

Do we know the total number of Parents? No. Therefore, the "number of parents" is an unknown.

Continue this pattern. Are there any other unknowns?

Answer 14

that isnt 1 of my choices

Answer 15

Heh.... I prolly messed up.

Answer 16

heh?? i dont get any of that!

Answer 17

@waffelgirl12345 : Did you actually read my long previous message? Do you really know what the object of this problem is?

Answer 18

Please review the problem statement. Find the part that tells you what you have to do. Explain in your own words what you are trying to find / identify.

Answer 19

`There are 25 people in the room in all.`
is this known or unknown?