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Maths strange question aptitude test.

Can someone explain the correct answer for this question please as I am struggling to understand it.

Thanks
Maths Q.png40.3KB
C, what's this for?
Original post by raglaf_II
Can someone explain the correct answer for this question please as I am struggling to understand it.

Thanks


Firstly, you are told revenue is proportional to number of customers.

In each row the sum is 200.

So 30/200 * 40/200 * 38/200 (picking out the categories given in the question) =5.7% of revenue generated by national- north east customers purchasing the capricorn line, hence approx 5.7% of customer base is of this classification.
(edited 8 years ago)
Original post by raglaf_II
Can someone explain the correct answer for this question please as I am struggling to understand it.

Thanks


Start by looking at the proportions:

National = 38/how many

North East =

etc
Original post by In One Ear
Firstly, you are told revenue is proportional to number of customers.

In each row the sum is 200.

So 30/200 * 40/200 * 38/200 (picking out the categories given in the question) =5.7% of revenue generated by national- north east customers purchasing the capricorn line, hence approx 5.7% of customer base is of this classification.



Please delete as full solutions aren't allowed ,,,

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