Answer:
4875/12927.
Explanation:
The cardiac output may be defined as the product of the heart rate and the stroke volume.
Cardiac output= stroke volume ×heart rate
The cardiac output at rest can be calculated as follows:
The stroke volume at rest is 75 and the heart rate is 65.
Cardiac output = 75×65
Cardiac output = 4875 .
The cardiac output after exercise can be calculated as follows:
The stroke volume has been increased by 24%.
Final stroke volume = 75 × 24/100 + 75
Final stroke volume = 93.
Heart rate = 139.
Cardiac output = 139×93
Cardiac output = 12927 .
Thus, the answer is 4875/12927.
