396+512=908 Not clear what the point of the question was, you may want to adjust it.
You could times 39.6 and 10.
99
Without seeing the question, it is hard to say whether or not your answer to part D would be different if you only looked at the graphs on page 396 in your text. One would have to think the answer would be different if you didn't take into consideration the whole problem.
The LCM is: 396
396, 792, 1188, and all other multiples of 396 are divisible by 396.
you could get an easy 500 to 600 horse out of a 396 with the right additions.
396 as percentage= 39600% 396 * 100% = 39600%
396
66
396
It is: 396/2 = 198