Word Problem: finding blood pressure, given age

[Radar]

The question is:

Systolic blood pressure; the upper number in a blood pressure reading, is measured as your heart muscle contracts. The equation:
P <= 1/2(a) = 110 gives the normal systolic blood pressure P based on age a.

a. Calculate your normal systolic blood pressure by substituting your age into the equation above.

b. At age 20, does 120 represent a maximum or a minimum of systolic pressure

 

[tkhunny]

I await eagerly the results of your calculations.

 

[Radar]

a. P <= 1/2(a) = 110
P <= 1/2(53) = 110
P <= 1/2(53/1) = 110
P <= 106 = 110

b. P <= 1/2(a) = 110
P <= 1/2(20) = 110
P <= 1/2(20/1) = 110
P <= 40 = 110

Maximum pressure.

 

[stapel]

P <= 40 = 110

"Forty equals one hundred"? Are you sure about that?

Please reply with the correct form of the equation (not an "inequality", according to what you have posted, and not something with two "equals" signs in it). Thank you.

Eliz.