There are 38 triangles in the figure.
I would say Song 1 on the top could be NO, and Song 1 on the bottom could be ON, then Song 2 on the very top could be NO again, then on the bottom of the very top could OO, then on the bottom of that could be NN, and on he very bottom could be ON.
Hope this helps.
Answer:
Well, it depends if you are asking the rate per gallon it would be 12 miles per gallon.
28 multiply by 0.75 =21
answer is 21
0.75 is 75%