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Bunuel
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Bunuel
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Hi Bunuel,

I understand the approach and the solution.

During the test, I was short on time and utilised this approach. It landed the same answer but I want to know if there is no logical gap.

I used options and found 40% of it as that would be the savings for marta.
As per the ratio; it is a multiple of 14. So, I thought along this and only option C was fit; 3500.

Thank you.



Marta’s savings must be proportional to 14, so 40% of Marta’s retainer must be of the form 14k. However, k does not have to be an integer, so simply checking whether 40% of an option is a multiple of 14 is not always logically airtight.
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ohh got it.

Can we, in this case, say that k to be terminating decimal ?

For that to happen prime number 7 can be eliminated.

Thank you!
Bunuel


Marta’s savings must be proportional to 14, so 40% of Marta’s retainer must be of the form 14k. However, k does not have to be an integer, so simply checking whether 40% of an option is a multiple of 14 is not always logically airtight.
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ohh got it.

Can we, in this case, say that k to be terminating decimal ?

For that to happen prime number 7 can be eliminated.

Thank you!


k is just a ratio multiplier, and the problem does not require k to be an integer or a terminating decimal.
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