Retired Moderator
Joined: 07 Jun 2014
Posts: 4815
Given Kudos: 0
WE:Business Development (Energy and Utilities)
Re: QOTD#25 Evangeline must spend of her weekly salary on rent a
[#permalink]
04 May 2017, 01:35
Explanation
The problem has percents in the answers and no real values in the question, so it’s a Hidden Plug In; the hidden variable in this case is Evangeline’s weekly salary.
To find an easy number, try multiplying the denominators in the problem: 8×6×9=432, so Evangeline makes $432per week. Now work the problems in bite-sized pieces.
She spends 38×$432=$162 on rent, leaving her with $432−$162=$270.
Of that, she spends , 16 or $45, on food, leaving her with $270−$45=$225.
If she wants to put 49 of her weekly salary, or $192, into a savings account, then she can only spend $225−$192=$33 on entertainment.
Finally, use your onscreen calculator to determine that 33 is just over 7.6% of 432, so choices (A), (B), and (C) will all work.