One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional.
12 goes into 75 6 times with a remainder of 3. So the answer will be 6 remainder 3
Answer:
1200 / 3 = 400 Calories per Liter
34 + x = 63
x = 63-34
x = 29
The constant proportionality is whats left over
