Finding X using a focal Date: Mr.D borrows $2000 now and $3000 in 4 months.

math12

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Feb 13, 2018
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Q)Mr.D borrows $2000 now and $3000 in 4 months. He agrees to pay $X in6 months and $2X in 8 months (from now). Determine X using a focaldate 8 months from now at simple interest rate r = 12%.


So far I have only plotted the dates on a timeline.
 
You'll need to know how to calculate simple interest for a number of months. Please demonstrate any such calculation.
 
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