Normal range of breathing rate per minute in an average adult person at rest is

What is rate of heart beat in a normal adult person?:

Man breaths how many times per minute?

What is average rate of respiration in a normal adult man?

Fill in the blanks: the glomerular filtration pressure in the nephrons of a normal adult person is ....... .

The length 'x' of a rectangle is decreasing at the rate of 5 cm per minute and the width 'y' is increasing at the rate of 4 cm per minute, when x = 8 cm and y = 6 cm, find the rate of change of the perimeter of the rectangle.