In one complete cardiac cycle,

• auricular systole ends for 0.1 seconds
• ventricular systole ends for 0.3 seconds
• Joint diastole ends for 0.4 seconds

What value of auricular systole, ventricular systole and joint diastole one will get for the four complete cardiac cycle?

Given: 
Auricular systole = 0.1 seconds
Ventricular systole = 0.3 seconds
Joint diastole = 0.4 seconds

Therefore for 4 cardiac cycles, 
Auricular systole = 0.1 x 4 = 0.4 seconds
Ventricular systole = 0.3 x 4 = 1.2 seconds
Joint diastole = 0.4 x 4 = 1.6 seconds

Duration of one cardiac cycle is = auricular systole + ventricular systole + Joint diastole

                                  i.e  0.1 + 0.3 + 0.4 = 0.8 seconds.

Therefore, the duration of 4 cardiac cycles will be 0.8 x 4 = 3.2 seconds.