The answer is 0.8 seconds. The heart beats 75 times per minute. Ventricular systole is 0.3 seconds and dilation is for 0.5 seconds. And the complete cycle of systole and diastole together constitute 0.8 seconds. This is because a cycle involves pumping the blood to all body systems through 2 ventricles (0.3 seconds) and refilling the 4 chambers of the heart (o.5 seconds).
Question : What is the value of $\frac{0.1 \div 0.2 \times 0.3+0.4 \times 0.5 \div 0.1}{0.1 \times 0.2-0.01} ?$
Option 1: 220
Option 2: 210
Option 3: 216
Option 4: 215
Question : What is the value of $\frac{1.2 \times 1.2+0.2 \times 0.2+1.2 \times 0.4}{1.8 \times 1.8+0.4 \times 0.4-1.8 \times 0.8} ?$
Option 1: 0.1
Option 2: 0.25
Option 3: 0.2
Option 4: 1
Question : What is the value of $\frac{(0.5)^{3}-(0.1)^{3}}{(0.5)^{2}+0.5\times 0.1+(0.1)^{2}}$?
Option 1: $0.1$
Option 2: $0.4$
Option 3: $0.5$
Option 4: $0.6$
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile