The answer is in the photo. Hope this helps
The first thing you do is mutitpy 320,000 by .20 so that you can find the amount of down payment. The down payment would be 64,000. So you subtract 64,000 from 320,000. This leaves a loan amount of 256,000 dollars. The answer is 256,000 dollars .
1/5 this is the closest answer i can think of
to calculate pi you can use the Nilakantha Series.
Obviously the 5 apples for $1.00 is the better buy. You are getting more apples for less money.