Let
x-----> the purchase price of the house
we know that
1) Marika paid 
of the purchase price of the house with a loan
2) Marika paid the remaining 
of the purchase price with her savings
3) represent the 
of the purchase price
so
Solve for x
Divide by 
both sides
therefore
<u>the answer is</u>
the purchase price of the house is 
I think it's called a coordinate plane
Sorry if I'm wrong
so, you'd end up with a pyramid with a volume "one sixteenth" of the original then
now, the original had a volume of 1536, the quarterized version will then just be one sixteenth of that, or 1536 * 1/36
Living comfortably after you retire is the answer
