Use Pythagoras theorem

Two triangles are similar

(6+3)*12/2 - 6*8 /2 = 30
Answer:
it's 5 because 20 -15 is 5
So, this is a proportion problem. If we express 75% as a fraction (3/4ths), we have:

Since he won all of his games, we add the number won (x), to the number previously won and divide it by the total games played which is just the previous games played plus the number of current games played, so since he lost no games we still add x to the denominator as well. Solving this gives us:

That x value is 20.
Energy in the form of HEAT
$12/25 pounds
12/25= $0.48
$0.48/pound is your answer