Help with this ratio and fraction question please
i have been struggling on this for the past ten minutes 
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Original post by student322
i have been struggling on this for the past ten minutes
What's the fraction of students who study french?
Original post by RDKGames
What's the fraction of students who study french?
3/5
Original post by student322
3/5
Out of the whole school population I mean, not just out of those who study a language.
Original post by RDKGames
Out of the whole school population I mean, not just out of those who study a language.
12/20
Original post by student322
12/20
How did you get the 12 ?
Original post by heididdo
3/4 study a language = 25% dont study french already
3/5 study french of the 75%. 3/5x0.75= 0.45
45% of students study french, therefore 65% dont.
45:65 = 9:13
Lol maybe?
3/5 study french of the 75%. 3/5x0.75= 0.45
45% of students study french, therefore 65% dont.
45:65 = 9:13
Lol maybe?
it says. thats wrong when i type it in
Original post by RDKGames
How did you get the 12 ?
because the denominators 4 and 5 have a common multiple of 20 so i did 3 X 4 for the second fraction. can u explain it please
Original post by student322
it says. thats wrong when i type it in
I cant do 100-45, look at my edit, its 9:11
Original post by the bear
i would start by choosing a suitable number for the whole school.... maybe 1000
then find 3/4 of 1000
then find 3/5 of the previous number....
then find 3/4 of 1000
then find 3/5 of the previous number....
it says thats wrong
Original post by student322
because the denominators 4 and 5 have a common multiple of 20 so i did 3 X 4 for the second fraction. can u explain it please
You're not adding the fractions though. You multiply them.
Original post by heididdo
I cant do 100-45, look at my edit, its 9:11
can you explain the answer again please
Original post by RDKGames
You're not adding the fractions though. You multiply them.
can u explain the answer please
Original post by Ak4753
Are you familiar with AND functions? You'd need to be to understand my solution.
yes please
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