1200 (1+.8 * 30/12) = 1740.00
1740.00 - 1200 = $540
16. It's basically the problem you started with, but just reversed.
Weight goes 4 feet down before hitting the pool
therefor the pool is 12-4 ft or 8ft deep
(12)+(-4)=8 is the sum of integers
12 is an integer
-4 is an integer
Check the picture below.
so if we get the product for each diameter, it'd be what you see in the picture to the left, and the largest is of course the Sun and the smallest is Mercury.
we can simply get their diameters' ratio to see how much larger.