Question

1/4 Of the class picks to go outside
3/10 of the class go to the computer lab
The rest of the class studies for a exam
What percent of the class goes outside?

Answer 1

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

Answer 2

find a common denominator so that 1/4 + 3/10 + x = 1
since fractions are just percentages that go to 100% (also written as 1)
in the equation
1/4 represents those that pick outside
3/10 represents those that go to the computer lab
and x represents those that study for the exam
if you solve for x you will get a fraction which can be converted into a percent

to convert it into a percent (you may need a calculator) divide the numorator by the denominator of x and multiply it by 100

Answer 3

1/4 of the class goes outside
so 25% of the class goes outside
unless the teacher goes by majority vote in which case nobody goes outside

Answer 4

o whoops the percent that goes outside, bleh i was thinking about those that went to study

Answer 5

I don't get it i need help solving it

Answer 6

they already give you the ammount that go outside as 1/4

Answer 7

I thought so also but then I read it again
It's ok your answer would be correct if they asked for the remainder
I gave you a medal

Answer 8

to convert a fraction into a percent, using 1/4 for example you do 1 divided by 4 and then multiply it by 100

Answer 9

that is 400% then

Answer 10

if you divide 1/4 you get 0.25

Answer 11

and 0.25 * 100 is 25
therefore it is 25% of the class

Answer 12

does this make sense? xD

Answer 13

No this isn't making anysense sorry

Answer 14

ok
1/4 Of the class picks to go outside
3/10 of the class go to the computer lab
The rest of the class studies for a exam
What percent of the class goes outside?

since the question asks WHAT PERCENT GOES OUTSIDE, we're only interested in the first section of information they give us:

1/4 of the class picks to go outside

the other 3/4 of the class go out to do whatever they want which is split among the exam and the lab, we're not interested in this information

using the 1/4 we can convert this into a percent

Answer 15

converting a fraction to a percent is done by following the equation:
\[(fraction) * 100 = percent \]

but since a fraction is just dividing two numbers we divide like so.

Answer 16

and our fraction that we want converted is 1/4
so we solve the equation:
\[1\div4 * 100 = percent\]

Answer 17

= 25%?

Answer 18

i hope that clears some things up

Answer 19

yep

Answer 20

But i don't get what the 3/10 equals?

Answer 21

take the percent of 3/10

Answer 22

30% ?

Answer 23

1/4 Of the class picks to go outside
3/10 of the class go to the computer lab
The rest of the class studies for a exam

since they say that 3/10 go to the computer lab
so if you convert that to percent then that is the percent that go to the computer lab

Answer 24

which is 30%

Answer 25

but remember that the question only asks us for those that go outside

Answer 26

now if had asked what percent went outside AND go to the computer lab then you can take the percent of both and then add them together which results in 55%

This means that 55% of the class either went to go to the lab or outside

Answer 27

what about the exam studying?

Answer 28

now that takes a bit more algebra, if you read what i first posted when i misread the question, you can solve for the variable x which is a fraction

Answer 29

now you can see where i got the equation from because try to get the percent of 1.
If you do you realize that 1 can be represented as 1/1 and converting that to a fraction gives 100%

Answer 30

and since the left MUST equal the right of an equation then since 1/4 and 3/10 are already used up then there is a remainning unknown number of students (we call x) that are studying BUT their total must be 100%

Answer 31

hence the equation becomes:
1/4 + 3/10 + x = 100% = 1

Answer 32

so if you wanna go beyond the question and figure out what percent of the class is studying you can solve for x and convert it into a percent