Question

A​ person's cardiofitness can be measured by determining how many​ METs, or metabolic​ units, he or she can reach at peak exertion. One MET is the amount of energy used when sitting quietly. The formulas for ideal METs are given below. 14.7minusage times 0.13      For women 14.7minusage times 0.11      For men ​a) Calculate the ideal MET for a 40​-year old man. ​b) Find​ 85% of the ideal MET in part​ a). ​(It is recommended that a person should reach​ 85% of his or her MET when​ exercising.)

Answer 1

A) 10.3; B) 8.755 or 8.8

Explanation:

A) We will use the formula for METs for men:

14.7-(age * 0.11)

For a 40-year-old, this gives us

14.7-(40*0.11) = 14.7-4.4 = 10.3

B) Taking 85% of a number means multiplying it by 85%. 85% = 85/100 = 0.85:

10.3(0.85) = 8.755, which rounds to 8.8.

Answer 2

a) Putting age into the formula gives

... MET = 14.7 - 40 × 0.11 = 14.7 - 4.4 = 10.3

b) 85% of this value is

... 0.85 × 10.3 = 8.755, about 8.8