Question 1121276
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Let *[tex \Large x_1] represent the amount that she had right after she paid the rent but before she gave to charity.  Then *[tex \Large 0.20x_1] must be the amount she gave to charity and *[tex \Large 0.80x_1] must be the amount that she put in the bank, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.80x_1\ =\ 360000]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x_1\ =\  \frac{360000}{0.8}]


Then *[tex \Large x_2] is the amount that she had after salaries but before rent, and since rent was 25% of that amount:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x_2\ =\ \frac{x_1}{0.75}]


And then *[tex \Large x_3], the total amount of the donation before salaries were paid, and salaries were 25% of that amount:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x_3\ =\ \frac{x_1}{0.75}]


Calculate *[tex \Large x_1].  Then calculate Charity: *[tex \Large x_1\ -\ 36000].  Then calculate *[tex \Large x_2] using the value of *[tex \Large x_1].  Then calculate Rent: *[tex \Large x_2\ -\ x_1].  Then calculate *[tex \Large x_3] which is the answer to your third question.  Then calculate the Rent amount divided by your answer to the third question for the answer to the first question.  Then calculate the Charity amount divided by the answer to the third question to get the answer to the second question.
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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