The Student Room Group

Fractions

This is the question... I am trying to multiply the fractions together come up with 4/15 so where can I go from there to find out how many b aren't doing French?

https://ibb.co/NFrCW6H
Reply 1
Original post by Strach2k
This is the question... I am trying to multiply the fractions together come up with 4/15 so where can I go from there to find out how many b aren't doing French?

https://ibb.co/NFrCW6H

because 2/3 times by 2/5 is 4/15, so this means 4/15 students do study french, this would means that 11/15 do not study french because you do 15-4=11.
Original post by Strach2k
This is the question... I am trying to multiply the fractions together come up with 4/15 so where can I go from there to find out how many b aren't doing French?

https://ibb.co/NFrCW6H

You are literally almost there, you’ve done the hard bit. Now, 4 out of 15 people study french, so the rest of the 15 people don’t, in other words 11 out of 15 don’t (15-4=11) so you’re ratio would be....
Everybody else does not study French (because they either study another language or they don't study any foreign language).
Reply 4
11:15?
Reply 5
It says 11:15 is incorrect
Reply 6
Its the ratio of
French speakers : not french speakers

So for every 4 french speakers, how many do not speak french? Thats the ratio.
Reply 7
Original post by Strach2k
This is the question... I am trying to multiply the fractions together come up with 4/15 so where can I go from there to find out how many b aren't doing French?

https://ibb.co/NFrCW6H


11 to 4? 4 being the people studying french
Reply 8
Ohh I get it 11/15 do not 4/15 do so ratio is 4:11
Original post by Strach2k
It says 11:15 is incorrect

11:15 would be the ratio of not french : everyone
You want the ratio of french : everyone except french, so the correct answer is 4:11
Reply 10
Original post by Strach2k
Ohh I get it 11/15 do not 4/15 do so ratio is 4:11

yeeeee i got it right?

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