Question

An airline flight attendant randomly chose 25 passengers on a transatlantic flight and asked them if they liked the new entertainment system. Twenty-one of those surveyed said yes.



If there are 231 passengers in all, about how many would you expect to say that they liked the new entertainment system?














A.

119











B.

147











C.

194











D.

210

Answer 1

Did you try the problem out yourself first?

Answer 2

yup..

Answer 3

Holy geez ginormaus spacing

Answer 4

Can you show your work? I can tell you where you went wrong n help guide you to the correct answer :)

Answer 5

What is the fraction of the customers polled who said they liked it? What number do you get if you multiply that fraction by the total number of passengers on the plane?

Answer 6

i just did 231 minus 21 nd got 210 but is it right ?

Answer 7

No, you need to do fractions / proportions. Look, if you ask 10 people if it is Monday, and 8 of them say yes, 8/10 of them think it is Monday. If you asked twice as many people, wouldn't you expect twice as many to say it is Monday?

Answer 8

That would be 16/20. Same ratio.

So, in this problem, 21 out of 25 people asked preferred the new system. That's 21/25. But now we want to find out what number x / the total number of passengers is the same ratio as 21/25. x:231 is as 21:25. Can you figure out which of the options you've been given gives you the same ratio?

Answer 9

ohhhhhhhhhhh ok i think .. i go it now .

Answer 10

So, what is your answer? We'll find out if you really do :-)

Answer 11

flutter you @whpalmer

Answer 12

fu.ck