A.) In order to find the percent, simply take the total, 2,400, and divide it by 100.
2,400/100=24.
Then, take the result, 24, and multiply it by 30 to get 30% of 2,400.
24*30=720
720 calories is the maximum amount that should come from fats.
B.) You do the same thing here:
Maximum heart rate=175 bpm
Take 175 and divide by 100.
175/100=1.75
Then, take the result, 1.75, and multiply it by 80, to get 80% of the maximum heart rate.
1.75*80=140 bpm.
Training heart rate is 140 bpm (beats per minute).
