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Re: Jackson invested $300,000, dividing it all unequally between Account P [#permalink]
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AkkuJi wrote:
Carcass wrote:
Jackson invested $300,000, dividing it all unequally between Account P and Account Q. At the end of the year, it turned out that Account P had earned 12% interest and Account Q had earned 25% interest. If Jackson earned a total of $60,000 in interest between the two accounts, which of the following is approximately the amount he put in account P?

A. $115,384
B. $120,000
C. $121,072
D. $124,129
E. $130,000


Panicked as runout of time and select wrong ans, do we have a on screen calculator would have been handy bb Carcass. Do you know where I can find one

Amount to P = x
Amount to Q = 300,000 -x

SI on P + SI on Q = 60,000

SI = PRT: Principal * Rate * Time

0.12x + 0.25(300,000 -x) = 60k
0.12x + 75k -0.25x = 60k
15k=0.13x
x= 15k/0.13 = 115,384

So ans is A


We implemented the on screen calculator and also it was quite good. But then for some arcane reasons it did not performed as we would so we are working to implement a definitive version of it.
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Re: Jackson invested $300,000, dividing it all unequally between Account P [#permalink]
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